655 lines
23 KiB
JavaScript
Executable File
655 lines
23 KiB
JavaScript
Executable File
/* Copyright (c) 2007 Paul Bakaus (paul.bakaus@googlemail.com) and Brandon Aaron (brandon.aaron@gmail.com || http://brandonaaron.net)
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* Dual licensed under the MIT (http://www.opensource.org/licenses/mit-license.php)
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* and GPL (http://www.opensource.org/licenses/gpl-license.php) licenses.
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*
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* $LastChangedDate$
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* $Rev$
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*
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* Version: 1.1.2
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*
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* Requires: jQuery 1.1.3+
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*/
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(function($){
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// store a copy of the core height and width methods
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var height = $.fn.height,
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width = $.fn.width;
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$.fn.extend({
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/**
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* If used on document, returns the document's height (innerHeight).
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* If used on window, returns the viewport's (window) height.
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* See core docs on height() to see what happens when used on an element.
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*
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* @example $("#testdiv").height()
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* @result 200
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*
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* @example $(document).height()
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* @result 800
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*
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* @example $(window).height()
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* @result 400
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*
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* @name height
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* @type Number
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* @cat Plugins/Dimensions
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*/
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height: function() {
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if ( !this[0] ) error();
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if ( this[0] == window )
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if ( $.browser.opera || ($.browser.safari && parseInt($.browser.version) > 520) )
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return self.innerHeight - (($(document).height() > self.innerHeight) ? getScrollbarWidth() : 0);
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else if ( $.browser.safari )
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return self.innerHeight;
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else
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return $.boxModel && document.documentElement.clientHeight || document.body.clientHeight;
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if ( this[0] == document )
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return Math.max( ($.boxModel && document.documentElement.scrollHeight || document.body.scrollHeight), document.body.offsetHeight );
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return height.apply(this, arguments);
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},
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/**
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* If used on document, returns the document's width (innerWidth).
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* If used on window, returns the viewport's (window) width.
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* See core docs on width() to see what happens when used on an element.
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*
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* @example $("#testdiv").width()
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* @result 200
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*
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* @example $(document).width()
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* @result 800
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*
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* @example $(window).width()
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* @result 400
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*
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* @name width
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* @type Number
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* @cat Plugins/Dimensions
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*/
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width: function() {
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if (!this[0]) error();
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if ( this[0] == window )
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if ( $.browser.opera || ($.browser.safari && parseInt($.browser.version) > 520) )
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return self.innerWidth - (($(document).width() > self.innerWidth) ? getScrollbarWidth() : 0);
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else if ( $.browser.safari )
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return self.innerWidth;
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else
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return $.boxModel && document.documentElement.clientWidth || document.body.clientWidth;
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if ( this[0] == document )
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if ($.browser.mozilla) {
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// mozilla reports scrollWidth and offsetWidth as the same
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var scrollLeft = self.pageXOffset;
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self.scrollTo(99999999, self.pageYOffset);
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var scrollWidth = self.pageXOffset;
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self.scrollTo(scrollLeft, self.pageYOffset);
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return document.body.offsetWidth + scrollWidth;
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}
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else
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return Math.max( (($.boxModel && !$.browser.safari) && document.documentElement.scrollWidth || document.body.scrollWidth), document.body.offsetWidth );
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return width.apply(this, arguments);
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},
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/**
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* Gets the inner height (excludes the border and includes the padding) for the first matched element.
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* If used on document, returns the document's height (innerHeight).
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* If used on window, returns the viewport's (window) height.
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*
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* @example $("#testdiv").innerHeight()
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* @result 210
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*
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* @name innerHeight
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* @type Number
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* @cat Plugins/Dimensions
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*/
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innerHeight: function() {
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if (!this[0]) error();
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return this[0] == window || this[0] == document ?
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this.height() :
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this.is(':visible') ?
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this[0].offsetHeight - num(this, 'borderTopWidth') - num(this, 'borderBottomWidth') :
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this.height() + num(this, 'paddingTop') + num(this, 'paddingBottom');
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},
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/**
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* Gets the inner width (excludes the border and includes the padding) for the first matched element.
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* If used on document, returns the document's width (innerWidth).
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* If used on window, returns the viewport's (window) width.
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*
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* @example $("#testdiv").innerWidth()
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* @result 210
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*
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* @name innerWidth
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* @type Number
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* @cat Plugins/Dimensions
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*/
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innerWidth: function() {
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if (!this[0]) error();
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return this[0] == window || this[0] == document ?
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this.width() :
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this.is(':visible') ?
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this[0].offsetWidth - num(this, 'borderLeftWidth') - num(this, 'borderRightWidth') :
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this.width() + num(this, 'paddingLeft') + num(this, 'paddingRight');
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},
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/**
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* Gets the outer height (includes the border and padding) for the first matched element.
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* If used on document, returns the document's height (innerHeight).
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* If used on window, returns the viewport's (window) height.
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*
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* The margin can be included in the calculation by passing an options map with margin
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* set to true.
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*
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* @example $("#testdiv").outerHeight()
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* @result 220
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*
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* @example $("#testdiv").outerHeight({ margin: true })
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* @result 240
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*
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* @name outerHeight
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* @type Number
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* @param Map options Optional settings to configure the way the outer height is calculated.
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* @cat Plugins/Dimensions
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*/
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outerHeight: function(options) {
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if (!this[0]) error();
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options = $.extend({ margin: false }, options || {});
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return this[0] == window || this[0] == document ?
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this.height() :
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this.is(':visible') ?
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this[0].offsetHeight + (options.margin ? (num(this, 'marginTop') + num(this, 'marginBottom')) : 0) :
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this.height()
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+ num(this,'borderTopWidth') + num(this, 'borderBottomWidth')
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+ num(this, 'paddingTop') + num(this, 'paddingBottom')
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+ (options.margin ? (num(this, 'marginTop') + num(this, 'marginBottom')) : 0);
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},
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/**
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* Gets the outer width (including the border and padding) for the first matched element.
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* If used on document, returns the document's width (innerWidth).
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* If used on window, returns the viewport's (window) width.
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*
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* The margin can be included in the calculation by passing an options map with margin
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* set to true.
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*
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* @example $("#testdiv").outerWidth()
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* @result 1000
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*
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* @example $("#testdiv").outerWidth({ margin: true })
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* @result 1020
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*
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* @name outerHeight
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* @type Number
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* @param Map options Optional settings to configure the way the outer width is calculated.
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* @cat Plugins/Dimensions
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*/
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outerWidth: function(options) {
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if (!this[0]) error();
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options = $.extend({ margin: false }, options || {});
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return this[0] == window || this[0] == document ?
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this.width() :
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this.is(':visible') ?
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this[0].offsetWidth + (options.margin ? (num(this, 'marginLeft') + num(this, 'marginRight')) : 0) :
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this.width()
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+ num(this, 'borderLeftWidth') + num(this, 'borderRightWidth')
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+ num(this, 'paddingLeft') + num(this, 'paddingRight')
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+ (options.margin ? (num(this, 'marginLeft') + num(this, 'marginRight')) : 0);
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},
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/**
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* Gets how many pixels the user has scrolled to the right (scrollLeft).
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* Works on containers with overflow: auto and window/document.
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*
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* @example $(window).scrollLeft()
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* @result 100
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*
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* @example $(document).scrollLeft()
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* @result 100
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*
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* @example $("#testdiv").scrollLeft()
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* @result 100
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*
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* @name scrollLeft
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* @type Number
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* @cat Plugins/Dimensions
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*/
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/**
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* Sets the scrollLeft property for each element and continues the chain.
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* Works on containers with overflow: auto and window/document.
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*
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* @example $(window).scrollLeft(100).scrollLeft()
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* @result 100
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*
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* @example $(document).scrollLeft(100).scrollLeft()
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* @result 100
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*
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* @example $("#testdiv").scrollLeft(100).scrollLeft()
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* @result 100
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*
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* @name scrollLeft
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* @param Number value A positive number representing the desired scrollLeft.
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* @type jQuery
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* @cat Plugins/Dimensions
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*/
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scrollLeft: function(val) {
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if (!this[0]) error();
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if ( val != undefined )
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// set the scroll left
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return this.each(function() {
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if (this == window || this == document)
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window.scrollTo( val, $(window).scrollTop() );
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else
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this.scrollLeft = val;
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});
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// return the scroll left offest in pixels
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if ( this[0] == window || this[0] == document )
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return self.pageXOffset ||
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$.boxModel && document.documentElement.scrollLeft ||
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document.body.scrollLeft;
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return this[0].scrollLeft;
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},
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/**
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* Gets how many pixels the user has scrolled to the bottom (scrollTop).
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* Works on containers with overflow: auto and window/document.
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*
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* @example $(window).scrollTop()
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* @result 100
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*
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* @example $(document).scrollTop()
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* @result 100
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*
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* @example $("#testdiv").scrollTop()
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* @result 100
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*
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* @name scrollTop
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* @type Number
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* @cat Plugins/Dimensions
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*/
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/**
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* Sets the scrollTop property for each element and continues the chain.
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* Works on containers with overflow: auto and window/document.
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*
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* @example $(window).scrollTop(100).scrollTop()
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* @result 100
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*
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* @example $(document).scrollTop(100).scrollTop()
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* @result 100
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*
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* @example $("#testdiv").scrollTop(100).scrollTop()
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* @result 100
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*
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* @name scrollTop
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* @param Number value A positive number representing the desired scrollTop.
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* @type jQuery
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* @cat Plugins/Dimensions
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*/
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scrollTop: function(val) {
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if (!this[0]) error();
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if ( val != undefined )
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// set the scroll top
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return this.each(function() {
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if (this == window || this == document)
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window.scrollTo( $(window).scrollLeft(), val );
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else
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this.scrollTop = val;
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});
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// return the scroll top offset in pixels
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if ( this[0] == window || this[0] == document )
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return self.pageYOffset ||
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$.boxModel && document.documentElement.scrollTop ||
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document.body.scrollTop;
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return this[0].scrollTop;
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},
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/**
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* Gets the top and left positioned offset in pixels.
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* The positioned offset is the offset between a positioned
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* parent and the element itself.
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*
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* For accurate calculations make sure to use pixel values for margins, borders and padding.
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*
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* @example $("#testdiv").position()
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* @result { top: 100, left: 100 }
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*
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* @example var position = {};
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* $("#testdiv").position(position)
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* @result position = { top: 100, left: 100 }
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*
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* @name position
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* @param Object returnObject Optional An object to store the return value in, so as not to break the chain. If passed in the
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* chain will not be broken and the result will be assigned to this object.
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* @type Object
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* @cat Plugins/Dimensions
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*/
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position: function(returnObject) {
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return this.offset({ margin: false, scroll: false, relativeTo: this.offsetParent() }, returnObject);
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},
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/**
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* Gets the location of the element in pixels from the top left corner of the viewport.
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* The offset method takes an optional map of key value pairs to configure the way
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* the offset is calculated. Here are the different options.
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*
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* (Boolean) margin - Should the margin of the element be included in the calculations? True by default.
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* (Boolean) border - Should the border of the element be included in the calculations? False by default.
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* (Boolean) padding - Should the padding of the element be included in the calculations? False by default.
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* (Boolean) scroll - Should the scroll offsets of the parent elements be included in the calculations? True by default.
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* When true it adds the total scroll offsets of all parents to the total offset and also adds two
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* properties to the returned object, scrollTop and scrollLeft.
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* (Boolean) lite - When true it will use the offsetLite method instead of the full-blown, slower offset method. False by default.
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* Only use this when margins, borders and padding calculations don't matter.
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* (HTML Element) relativeTo - This should be a parent of the element and should have position (like absolute or relative).
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* It will retreive the offset relative to this parent element. By default it is the body element.
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*
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* Also an object can be passed as the second paramater to
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* catch the value of the return and continue the chain.
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*
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* For accurate calculations make sure to use pixel values for margins, borders and padding.
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*
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* Known issues:
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* - Issue: A div positioned relative or static without any content before it and its parent will report an offsetTop of 0 in Safari
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* Workaround: Place content before the relative div ... and set height and width to 0 and overflow to hidden
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*
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* @example $("#testdiv").offset()
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* @result { top: 100, left: 100, scrollTop: 10, scrollLeft: 10 }
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*
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* @example $("#testdiv").offset({ scroll: false })
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* @result { top: 90, left: 90 }
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*
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* @example var offset = {}
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* $("#testdiv").offset({ scroll: false }, offset)
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* @result offset = { top: 90, left: 90 }
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*
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* @name offset
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* @param Map options Optional settings to configure the way the offset is calculated.
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* @param Object returnObject An object to store the return value in, so as not to break the chain. If passed in the
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* chain will not be broken and the result will be assigned to this object.
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* @type Object
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* @cat Plugins/Dimensions
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*/
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offset: function(options, returnObject) {
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if (!this[0]) error();
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var x = 0, y = 0, sl = 0, st = 0,
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elem = this[0], parent = this[0], op, parPos, elemPos = $.css(elem, 'position'),
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mo = $.browser.mozilla, ie = $.browser.msie, oa = $.browser.opera,
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sf = $.browser.safari, sf3 = $.browser.safari && parseInt($.browser.version) > 520,
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absparent = false, relparent = false,
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options = $.extend({ margin: true, border: false, padding: false, scroll: true, lite: false, relativeTo: document.body }, options || {});
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// Use offsetLite if lite option is true
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if (options.lite) return this.offsetLite(options, returnObject);
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// Get the HTMLElement if relativeTo is a jquery collection
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if (options.relativeTo.jquery) options.relativeTo = options.relativeTo[0];
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if (elem.tagName == 'BODY') {
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// Safari 2 is the only one to get offsetLeft and offsetTop properties of the body "correct"
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// Except they all mess up when the body is positioned absolute or relative
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x = elem.offsetLeft;
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y = elem.offsetTop;
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// Mozilla ignores margin and subtracts border from body element
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if (mo) {
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x += num(elem, 'marginLeft') + (num(elem, 'borderLeftWidth')*2);
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y += num(elem, 'marginTop') + (num(elem, 'borderTopWidth') *2);
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} else
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// Opera ignores margin
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if (oa) {
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x += num(elem, 'marginLeft');
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y += num(elem, 'marginTop');
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} else
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// IE does not add the border in Standards Mode
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if ((ie && jQuery.boxModel)) {
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x += num(elem, 'borderLeftWidth');
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y += num(elem, 'borderTopWidth');
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} else
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// Safari 3 doesn't not include border or margin
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if (sf3) {
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x += num(elem, 'marginLeft') + num(elem, 'borderLeftWidth');
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y += num(elem, 'marginTop') + num(elem, 'borderTopWidth');
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}
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} else {
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do {
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parPos = $.css(parent, 'position');
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x += parent.offsetLeft;
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y += parent.offsetTop;
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// Mozilla and IE do not add the border
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// Mozilla adds the border for table cells
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if ((mo && !parent.tagName.match(/^t[d|h]$/i)) || ie || sf3) {
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// add borders to offset
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x += num(parent, 'borderLeftWidth');
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y += num(parent, 'borderTopWidth');
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// Mozilla does not include the border on body if an element isn't positioned absolute and is without an absolute parent
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if (mo && parPos == 'absolute') absparent = true;
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// IE does not include the border on the body if an element is position static and without an absolute or relative parent
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if (ie && parPos == 'relative') relparent = true;
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}
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op = parent.offsetParent || document.body;
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if (options.scroll || mo) {
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do {
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if (options.scroll) {
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// get scroll offsets
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sl += parent.scrollLeft;
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st += parent.scrollTop;
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}
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// Opera sometimes incorrectly reports scroll offset for elements with display set to table-row or inline
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if (oa && ($.css(parent, 'display') || '').match(/table-row|inline/)) {
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sl = sl - ((parent.scrollLeft == parent.offsetLeft) ? parent.scrollLeft : 0);
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st = st - ((parent.scrollTop == parent.offsetTop) ? parent.scrollTop : 0);
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}
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// Mozilla does not add the border for a parent that has overflow set to anything but visible
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if (mo && parent != elem && $.css(parent, 'overflow') != 'visible') {
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x += num(parent, 'borderLeftWidth');
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y += num(parent, 'borderTopWidth');
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}
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parent = parent.parentNode;
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} while (parent != op);
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}
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parent = op;
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// exit the loop if we are at the relativeTo option but not if it is the body or html tag
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if (parent == options.relativeTo && !(parent.tagName == 'BODY' || parent.tagName == 'HTML')) {
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// Mozilla does not add the border for a parent that has overflow set to anything but visible
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if (mo && parent != elem && $.css(parent, 'overflow') != 'visible') {
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x += num(parent, 'borderLeftWidth');
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y += num(parent, 'borderTopWidth');
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}
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// Safari 2 and opera includes border on positioned parents
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if ( ((sf && !sf3) || oa) && parPos != 'static' ) {
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x -= num(op, 'borderLeftWidth');
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y -= num(op, 'borderTopWidth');
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}
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break;
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}
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if (parent.tagName == 'BODY' || parent.tagName == 'HTML') {
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// Safari 2 and IE Standards Mode doesn't add the body margin for elments positioned with static or relative
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if (((sf && !sf3) || (ie && $.boxModel)) && elemPos != 'absolute' && elemPos != 'fixed') {
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x += num(parent, 'marginLeft');
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y += num(parent, 'marginTop');
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}
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// Safari 3 does not include the border on body
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// Mozilla does not include the border on body if an element isn't positioned absolute and is without an absolute parent
|
|
// IE does not include the border on the body if an element is positioned static and without an absolute or relative parent
|
|
if ( sf3 || (mo && !absparent && elemPos != 'fixed') ||
|
|
(ie && elemPos == 'static' && !relparent) ) {
|
|
x += num(parent, 'borderLeftWidth');
|
|
y += num(parent, 'borderTopWidth');
|
|
}
|
|
break; // Exit the loop
|
|
}
|
|
} while (parent);
|
|
}
|
|
|
|
var returnValue = handleOffsetReturn(elem, options, x, y, sl, st);
|
|
|
|
if (returnObject) { $.extend(returnObject, returnValue); return this; }
|
|
else { return returnValue; }
|
|
},
|
|
|
|
/**
|
|
* Gets the location of the element in pixels from the top left corner of the viewport.
|
|
* This method is much faster than offset but not as accurate when borders and margins are
|
|
* on the element and/or its parents. This method can be invoked
|
|
* by setting the lite option to true in the offset method.
|
|
* The offsetLite method takes an optional map of key value pairs to configure the way
|
|
* the offset is calculated. Here are the different options.
|
|
*
|
|
* (Boolean) margin - Should the margin of the element be included in the calculations? True by default.
|
|
* (Boolean) border - Should the border of the element be included in the calculations? False by default.
|
|
* (Boolean) padding - Should the padding of the element be included in the calcuations? False by default.
|
|
* (Boolean) scroll - Sould the scroll offsets of the parent elements be included int he calculations? True by default.
|
|
* When true it adds the total scroll offsets of all parents to the total offset and also adds two
|
|
* properties to the returned object, scrollTop and scrollLeft.
|
|
* (HTML Element) relativeTo - This should be a parent of the element and should have position (like absolute or relative).
|
|
* It will retreive the offset relative to this parent element. By default it is the body element.
|
|
*
|
|
* @name offsetLite
|
|
* @param Map options Optional settings to configure the way the offset is calculated.
|
|
* @param Object returnObject An object to store the return value in, so as not to break the chain. If passed in the
|
|
* chain will not be broken and the result will be assigned to this object.
|
|
* @type Object
|
|
* @cat Plugins/Dimensions
|
|
*/
|
|
offsetLite: function(options, returnObject) {
|
|
if (!this[0]) error();
|
|
var x = 0, y = 0, sl = 0, st = 0, parent = this[0], offsetParent,
|
|
options = $.extend({ margin: true, border: false, padding: false, scroll: true, relativeTo: document.body }, options || {});
|
|
|
|
// Get the HTMLElement if relativeTo is a jquery collection
|
|
if (options.relativeTo.jquery) options.relativeTo = options.relativeTo[0];
|
|
|
|
do {
|
|
x += parent.offsetLeft;
|
|
y += parent.offsetTop;
|
|
|
|
offsetParent = parent.offsetParent || document.body;
|
|
if (options.scroll) {
|
|
// get scroll offsets
|
|
do {
|
|
sl += parent.scrollLeft;
|
|
st += parent.scrollTop;
|
|
parent = parent.parentNode;
|
|
} while(parent != offsetParent);
|
|
}
|
|
parent = offsetParent;
|
|
} while (parent && parent.tagName != 'BODY' && parent.tagName != 'HTML' && parent != options.relativeTo);
|
|
|
|
var returnValue = handleOffsetReturn(this[0], options, x, y, sl, st);
|
|
|
|
if (returnObject) { $.extend(returnObject, returnValue); return this; }
|
|
else { return returnValue; }
|
|
},
|
|
|
|
/**
|
|
* Returns a jQuery collection with the positioned parent of
|
|
* the first matched element. This is the first parent of
|
|
* the element that has position (as in relative or absolute).
|
|
*
|
|
* @name offsetParent
|
|
* @type jQuery
|
|
* @cat Plugins/Dimensions
|
|
*/
|
|
offsetParent: function() {
|
|
if (!this[0]) error();
|
|
var offsetParent = this[0].offsetParent;
|
|
while ( offsetParent && (offsetParent.tagName != 'BODY' && $.css(offsetParent, 'position') == 'static') )
|
|
offsetParent = offsetParent.offsetParent;
|
|
return $(offsetParent);
|
|
}
|
|
});
|
|
|
|
/**
|
|
* Throws an error message when no elements are in the jQuery collection
|
|
* @private
|
|
*/
|
|
var error = function() {
|
|
throw "Dimensions: jQuery collection is empty";
|
|
};
|
|
|
|
/**
|
|
* Handles converting a CSS Style into an Integer.
|
|
* @private
|
|
*/
|
|
var num = function(el, prop) {
|
|
return parseInt($.css(el.jquery?el[0]:el,prop))||0;
|
|
};
|
|
|
|
/**
|
|
* Handles the return value of the offset and offsetLite methods.
|
|
* @private
|
|
*/
|
|
var handleOffsetReturn = function(elem, options, x, y, sl, st) {
|
|
if ( !options.margin ) {
|
|
x -= num(elem, 'marginLeft');
|
|
y -= num(elem, 'marginTop');
|
|
}
|
|
|
|
// Safari and Opera do not add the border for the element
|
|
if ( options.border && (($.browser.safari && parseInt($.browser.version) < 520) || $.browser.opera) ) {
|
|
x += num(elem, 'borderLeftWidth');
|
|
y += num(elem, 'borderTopWidth');
|
|
} else if ( !options.border && !(($.browser.safari && parseInt($.browser.version) < 520) || $.browser.opera) ) {
|
|
x -= num(elem, 'borderLeftWidth');
|
|
y -= num(elem, 'borderTopWidth');
|
|
}
|
|
|
|
if ( options.padding ) {
|
|
x += num(elem, 'paddingLeft');
|
|
y += num(elem, 'paddingTop');
|
|
}
|
|
|
|
// do not include scroll offset on the element ... opera sometimes reports scroll offset as actual offset
|
|
if ( options.scroll && (!$.browser.opera || elem.offsetLeft != elem.scrollLeft && elem.offsetTop != elem.scrollLeft) ) {
|
|
sl -= elem.scrollLeft;
|
|
st -= elem.scrollTop;
|
|
}
|
|
|
|
return options.scroll ? { top: y - st, left: x - sl, scrollTop: st, scrollLeft: sl }
|
|
: { top: y, left: x };
|
|
};
|
|
|
|
/**
|
|
* Gets the width of the OS scrollbar
|
|
* @private
|
|
*/
|
|
var scrollbarWidth = 0;
|
|
var getScrollbarWidth = function() {
|
|
if (!scrollbarWidth) {
|
|
var testEl = $('<div>')
|
|
.css({
|
|
width: 100,
|
|
height: 100,
|
|
overflow: 'auto',
|
|
position: 'absolute',
|
|
top: -1000,
|
|
left: -1000
|
|
})
|
|
.appendTo('body');
|
|
scrollbarWidth = 100 - testEl
|
|
.append('<div>')
|
|
.find('div')
|
|
.css({
|
|
width: '100%',
|
|
height: 200
|
|
})
|
|
.width();
|
|
testEl.remove();
|
|
}
|
|
return scrollbarWidth;
|
|
};
|
|
|
|
})(jQuery); |