Auto Colspan for same cell data

colspan_auto.js

jQuery(document).ready(function() {
    function ninjaTableAutoColspan()
    {
        if($table.hasClass('ninja_stacked_table')) {
            return;
        }
        $table.find('tr').each(function() {
            var tr = this;
            var counter = 0;
            var strLookupText = '';
            var isHTML = RegExp.prototype.test.bind(/(<([^>]+)>)/i);

            jQuery('td', tr).each(function(index, value) {
                var td = jQuery(this);

                if(!isHTML(td[0].innerHTML) && td[0].innerHTML !== ''){
                    if ((td.text() === strLookupText) ) {
                        counter++;
                        td.prev().attr('colspan', '' + parseInt(counter + 1,10) + '').css({textAlign : 'center'});

                        td.remove();
                    }
                }
                else {
                    counter = 0;
                }
                strLookupText = td.text();
            });
        });
    }
    ninjaTableAutoColspan();
});