jQuery.fn.rowspan = function(colIdx) {
    return this.each(function() {
        var that;
        $('tr', this).each(function(row) {
            $('td:eq(' + colIdx + ')', this).filter(':visible').each(function(col) {
                if (that != null && $(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);
                    $(this).hide();
                } else {
                    that = this;
                }
            });
        });
    });
}
$(function() {
    //要合并的列序號
    $("#content_table").rowspan(0);
    $("#content_table").rowspan(1);
});

非本人原創(chuàng)