前台调用（第一个参数是table的id)：  
function toExcel(inTblId, inWindow) { 
if ($.browser.msie) { //如果是IE浏览器 
try { 
var allStr = ""; 
var curStr = ""; 
if (inTblId != null && inTblId != "" && inTblId != "null") { 
curStr = getTblData(inTblId, inWindow); 
} 
if (curStr != null) { 
allStr += curStr; 
} 
else { 
alert("你要导出的表不存在！"); 
return; 
} 
var fileName = getExcelFileName(); 
doFileExport(fileName, allStr); 
} 
catch (e) { 
alert("导出发生异常:" + e.name + "->" + e.description + "!"); 
} 
} 
else { 
window.open('data:application/vnd.ms-excel,' + encodeURIComponent($('div[id$=divGvData]').html())); 
e.preventDefault(); 
} 
} 
function getTblData(inTbl, inWindow) { 
var rows = 0; 
var tblDocument = document; 
if (!!inWindow && inWindow != "") { 
if (!document.all(inWindow)) { 
return null; 
} 
else { 
tblDocument = eval(inWindow).document; 
} 
} 
var curTbl = tblDocument.getElementById(inTbl); 
if (curTbl.rows.length > 65000) { 
alert('源行数不能大于65000行'); 
return false; 
} 
if (curTbl.rows.length <= 1) { 
alert('数据源没有数据'); 
return false; 
} 
var outStr = ""; 
if (curTbl != null) { 
for (var j = 0; j < curTbl.rows.length; j++) { 
for (var i = 0; i < curTbl.rows[j].cells.length; i++) { 
if (i == 0 && rows > 0) { 
outStr += " \t"; 
rows -= 1; 
} 
var tc = curTbl.rows[j].cells[i]; 
if (j > 0 && tc.hasChildNodes() && tc.firstChild.nodeName.toLowerCase() == "input") { 
if (tc.firstChild.type.toLowerCase() == "checkbox") { 
if (tc.firstChild.checked == true) { 
outStr += "是" + "\t"; 
} 
else { 
outStr += "否" + "\t"; 
} 
} 
} 
else { 
outStr += " "+curTbl.rows[j].cells[i].innerText + "\t"; 
} 
if (curTbl.rows[j].cells[i].colSpan > 1) { 
for (var k = 0; k < curTbl.rows[j].cells[i].colSpan - 1; k++) { 
outStr += " \t"; 
} 
} 
if (i == 0) { 
if (rows == 0 && curTbl.rows[j].cells[i].rowSpan > 1) { 
rows = curTbl.rows[j].cells[i].rowSpan - 1; 
} 
} 
} 
outStr += "\r\n"; 
} 
} 
else { 
outStr = null; 
alert(inTbl + "不存在!"); 
} 
return outStr; 
} 
function getExcelFileName() { 
var d = new Date(); 
var curYear = d.getYear(); 
var curMonth = "" + (d.getMonth() + 1); 
var curDate = "" + d.getDate(); 
var curHour = "" + d.getHours(); 
var curMinute = "" + d.getMinutes(); 
var curSecond = "" + d.getSeconds(); 
if (curMonth.length == 1) { 
curMonth = "0" + curMonth; 
} 
if (curDate.length == 1) { 
curDate = "0" + curDate; 
} 
if (curHour.length == 1) { 
curHour = "0" + curHour; 
} 
if (curMinute.length == 1) { 
curMinute = "0" + curMinute; 
} 
if (curSecond.length == 1) { 
curSecond = "0" + curSecond; 
} 
var fileName = "设备状态" + curYear + curMonth + curDate + curHour + curMinute + curSecond + ".xls"; 
return fileName; 
} 
function doFileExport(inName, inStr) { 
var xlsWin = null; 
if (!!document.all("glbHideFrm")) { 
xlsWin = glbHideFrm; 
} 
else { 
var width = 1; 
var height = 1; 
var openPara = "left=" + (window.screen.width / 2 + width / 2) 
+ ",top=" + (window.screen.height + height / 2) 
+ ",scrollbars=no,width=" + width + ",height=" + height; 
xlsWin = window.open("", "_blank", openPara); 
} 
xlsWin.document.write(inStr); 
xlsWin.document.close(); 
xlsWin.document.execCommand('Saveas', true, inName); 
xlsWin.close(); 
}