$(document).ready(function() 
    { 	 
	// by document no
    $.tablesorter.addParser({
        // set a unique id
        id: 'rangesort',
        is: function (s) {
            // return false so this parser is not auto detected
            return false;
        },
        format: function (s, table, cell, cellIndex) {
            // get data attributes from $(cell).attr('data-something');
            // check specific column using cellIndex
      
            return $(cell).attr('data-price');
        },
        // set type, either numeric or text
        type: 'numeric'
    });
    // by total netto
    $.tablesorter.addParser({
        // set a unique id
        id: 'rangesorttota',
        is: function (s) {
            // return false so this parser is not auto detected
            return false;
        },
        format: function (s, table, cell, cellIndex) {
            // get data attributes from $(cell).attr('data-something');
            // check specific column using cellIndex
      
            return $(cell).attr('data-total');
        },
        // set type, either numeric or text
        type: 'numeric'
    });
    // by vat

    $.tablesorter.addParser({
        // set a unique id
        id: 'rangesorttotav',
        is: function (s) {
            // return false so this parser is not auto detected
            return false;
        },
        format: function (s, table, cell, cellIndex) {
            // get data attributes from $(cell).attr('data-something');
            // check specific column using cellIndex
      
            return $(cell).attr('data-total');
        },
        // set type, either numeric or text
        type: 'numeric'
    });
    // by total brutto
    $.tablesorter.addParser({
        // set a unique id
        id: 'rangesorttotan',
        is: function (s) {
            // return false so this parser is not auto detected
            return false;
        },
        format: function (s, table, cell, cellIndex) {
            // get data attributes from $(cell).attr('data-something');
            // check specific column using cellIndex
      
            return $(cell).attr('data-total');
        },
        // set type, either numeric or text
        type: 'numeric'
    });
    // by total invoice
    $.tablesorter.addParser({
        // set a unique id
        id: 'rangesorttotai',
        is: function (s) {
            // return false so this parser is not auto detected
            return false;
        },
        format: function (s, table, cell, cellIndex) {
            // get data attributes from $(cell).attr('data-something');
            // check specific column using cellIndex
      
            return $(cell).attr('data-total');
        },
        // set type, either numeric or text
        type: 'numeric'
    });
    $('#selectall').click(function(event) {  //on click 
        if(this.checked) { // check select status
            $('.make_pdf').each(function() { //loop through each checkbox
                this.checked = true;  //select all checkboxes with class "checkbox1"               
            });
        }else{
            $('.make_pdf').each(function() { //loop through each checkbox
                this.checked = false; //deselect all checkboxes with class "checkbox1"                       
            });         
        }
    });
    // hightlight table row
    $('#myTable tr').mouseover(function(e) {
        $('#myTable tr').removeClass('highlighted');
        $(this).addClass('highlighted');
    });
    $('.tablesorter').tablesorter({
        headers: {
        	  0: { 
                  // disable it by setting the property sorter to false 
                  sorter: false 
              }, 
        1: {
            sorter: 'rangesort'
        },

	    4: {
	        sorter: 'rangesorttotav'
	    },
	    5: {
	        sorter: 'rangesorttotan'
	    },
	    6: {
	        sorter: 'rangesorttotai'
	    }
        }
    });
 
});