var dataDiv;
    var dataTableBody;
    var curElement;
    var evtt;
    var x;
    var y;
    var XMLHttpReq = false;
 	//创建XMLHttpRequest对象       
    function createXMLHttpRequest() {
		if(window.XMLHttpRequest) { //Mozilla 浏览器
			XMLHttpReq = new XMLHttpRequest();
		}
		else if (window.ActiveXObject) { // IE浏览器
			try {
				XMLHttpReq = new ActiveXObject("Msxml2.XMLHTTP");
			} catch (e) {
				try {
					XMLHttpReq = new ActiveXObject("Microsoft.XMLHTTP");
				} catch (e) {}
			}
		}
	}
	//发送请求函数
	function getDetail(element,evt) {
	    evtt = evt ? evt:(window.event?window.event:null);
//	    alert(evtt.x);
        x = evtt.x ? evtt.x : evtt.layerX;
        y = evtt.y ? evtt.y : evtt.layerY;
        dataTableBody = document.getElementById("dataBody");            
        dataDiv = document.getElementById("popup");
		createXMLHttpRequest();
        curElement = element;
        var url = "/web/wsb/news.php?id=" + element.id;
        if(!XMLHttpReq) alert("创建XMLHttpReq失败"); 
		XMLHttpReq.open("GET", url, true);
		XMLHttpReq.onreadystatechange = processResponse;//指定响应函数
		XMLHttpReq.send(null);  // 发送请求
	}
	// 处理返回信息函数
    function processResponse() {
    	if (XMLHttpReq.readyState == 4) { // 判断对象状态
        	if (XMLHttpReq.status == 200) { // 信息已经成功返回，开始处理信息
                setData(XMLHttpReq.responseText);
            } else { //页面不正常
                window.alert("您所请求的页面有异常。");
            }
        }
    }
	// 显示提示框
    function setData(data) { 
        setOffsets();     
	var row = createRow(data);
	//alert(row.innerHTML);
        dataTableBody.appendChild(row);
   	}
	//生成表格内容行
  function createRow(data) {          
       var row, cell, txtNode;
       row = document.createElement("tr");
       cell = document.createElement("td");
       cell.setAttribute("bgcolor", "#FFFAFA");
       cell.setAttribute("border", "0");  
	   cell.setAttribute("width","200");                         
       txtNode = document.createTextNode(data);
       cell.appendChild(txtNode);
       row.appendChild(cell);
       //alert(row.innerHTML);
       return row;  
   	}
	//设置显示位置                
  function setOffsets() {
   	if(!dataDiv) {
   		alert("xxx");
   		return ;
   	}
       dataDiv.style.border = "black 1px solid";
       dataDiv.style.left = x + "px";
       dataDiv.style.top = y + "px";
   	}
  function clearData() {
	if(!dataTableBody) return ;
        var ind = dataTableBody.childNodes.length;         
        for (var i = ind - 1; i >= 0 ; i--) {
           dataTableBody.removeChild(dataTableBody.childNodes[i]);       
        }
        dataDiv.style.border = "none";
  }