JQuery Rowspan

(function($){
$.fn.rowspan = function(colIdx) {
return this.each(function(){
var that;
   $('tbody tr', this).each(function(row) {
    $('td:eq('+colIdx+')', this).each(function(col) {
       if ($(this).html() == $(that).html()) {
           rowspan = $(that).attr("rowSpan");
           if (rowspan == undefined) {
            $(that).attr("rowSpan",1);
            rowspan = $(that).attr("rowSpan");
           }
           rowspan = Number(rowspan)+1;
           $(that).attr("rowSpan",rowspan); // do your action for the colspan cell here
           $(this).hide(); // .remove(); // do your action for the old cell here
       } else {
           that = this;
          }
          that = (that == null) ? this : that; // set the that if not already set
      });
    });
  });
};
})(jQuery);