解决jqgrid中rowspan

//jqGrid-ttable-rowspan
////////////////////////////////////////////////////////////////////////////////////////////////////////////////
/*用法
* $("#tableId").jqGridTableRowSpan("13,14,15");//要合并的列序号,散列形式
* 仅仅只适用于jqGrid
* 
* 
 * */
jQuery.fn.jqGridTableRowSpan = function(colIndexs) {  
	 return this.each(function() {  
	  var indexs = eval("([" + colIndexs + "])");  
 for (var i = 0; i < indexs.length; i++) {  
									 var colIdx = indexs[i]; 
							            var that=new Array();
								        var firstrowspan=0;
	$('tbody tr', this).each(function(row) {
    for(var k=0;k<colIdx.length;k++){
 $('td:eq(' + colIdx[k] + ')', this).filter(':visible').each(
      function(col) { 
    if (that[k] != null && $(this).html() == $(that[k]).html()) { 
	rowspan = $(that[k]).attr("rowSpan"); 
	 if (rowspan == undefined) {  
		$(that[k]).attr("rowSpan", 1);  
		 rowspan = $(that[k]).attr("rowSpan");  
			                         }
	rowspan = Number(rowspan) + 1;
	  if(k==0){
	 $(that[k]).attr("rowSpan", rowspan); 
                 	 $(this).hide();                                   
firstrowspan=rowspan;
  }
	 if(k!=0&&rowspan<=firstrowspan){
	 $(that[k]).attr("rowSpan", rowspan);    
	$(this).hide();   }
	 } else {
	 if(k==0){
//if it is the first of the group then set others null ,
	 that=new Array();
	 that[0]=this;
	 }else{
	   that[k] = this;
		 }
	  }  
		       });  
	 }	  
 }); 
  }      });  
	 };