var $this = $chCol.eq(0);
var spanCount = $this.attr("colspan"); //当前单元格是融合的
if (spanCount && spanCount > 1) {
spanCount--;
if (spanCount > 1)
$this.attr("colspan", spanCount);
else
$this.removeAttr("colspan");
$this.attr("class", nextClass); //colspan值减1后加到后面一列去
}
var rSp = $this.attr("rowspan");
if (rSp && rSp > 1)
ri += rSp;
else
ri++;