JavaScript合并单元格

function SpanGrid(tabObj,colIndex){
	 if(tabObj != null){
		 var i,j;
		 var intSpan;
		 var strTemp;
		 for(i = 0; i < tabObj.rows.length; i++){
			intSpan = 1;
			strTemp = tabObj.rows[i].cells[colIndex].innerHTML;
			for(j = i + 1; j < tabObj.rows.length; j++){
				if(strTemp == tabObj.rows[j].cells[colIndex].innerHTML){
					intSpan++;
					tabObj.rows[i].cells[colIndex].rowSpan  = intSpan;
					tabObj.rows[j].deleteCell(colIndex);
				}else{
					break;
				}
		   }
			i = j - 1;
		}
	 }
}