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function addRow(){
//¶¯Ì¬²åÈëÒ»ÐÐ
var oRow1=mediaMes.insertRow(mediaMes.rows.length);
//ÉèÖÃtrµÄid
oRow1.id="tr"+thisId;
//»ñµÃ±í×ܵÄÐÐÊý
var aRows=mediaMes.rows;
//»ñµÃÐÂÌí¼ÓÐеÄÁм¯ºÏ
var aCells=oRow1.cells;
//ÔÙÐÂÌí¼ÓµÄÐÐÀïÃæ²åÈëÒ»¸öÁÐ
var oCell1_1=aRows[oRow1.rowIndex].insertCell(aCells.length);
//=================ÉèÖÃÁеÄÑùʽ======================
oCell1_1.align="center";
var oStyle1 = oCell1_1.getAttribute("style");
//Ieä¯ÀÀÆ÷¶¯Ì¬ÉèÖÃÑùʽ²»ÄÜÖ±½Ó¸øÐлòÁÐÖ¸¶¨classÊôÐÔ
//ÒªÏȰÑÑùʽ·Åµ½Ò»¸ö¶ÔÏóµÄattributeÀïÃæ£¬È»ºóÔÚ°ÑÕâ¸ö¶ÔÏóÉèÖõ½ÐлòÁÐÀïÃæÈ¥
// ie
if(oStyle1 == "[object]") {
oStyle1.setAttribute("cssText","border-right: 1px solid #003399;border-bottom: 1px solid #003399;");
oCell1_1.setAttribute("style",oStyle1 );
} else {
oCell1_1.setAttribute("class","td_border" );
}
var cell1="<input type='text' name="user" id='user'/>";
oCell1_1.innerHTML=cell1;
}
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