function main(spreadsheetReport) {
spreadsheetReport.elem_param.style.textAlign = "center";
//使用虚拟表格单元的办法,将参数面板虚拟成一个单元格,然后让单元格居中。
spreadsheetReport.elem_param.style.display = "table-cell";
var td = spreadsheetReport.elem_param.parentNode;
td.setAttribute('align', "center");
}