//弹出层
    function openLayer(objId,conId,mUrl){
     var arrayPageSize   = getPageSize();//调用getPageSize()函数
     var arrayPageScroll = getPageScroll();//调用getPageScroll()函数
     if (!document.getElementById("popupAddr")){
     //创建弹出内容层
      var popupDiv = document.createElement("div");
      
      //给这个元素设置属性与样式
      popupDiv.setAttribute("id","popupAddr")
      popupDiv.style.position = "absolute";
      popupDiv.style.border = "1px solid #ccc";
      popupDiv.style.background = "#fff";
      popupDiv.style.zIndex = 99;
      
     //创建弹出背景层
      var bodyBack = document.createElement("div");
      bodyBack.setAttribute("id","bodybg")
      bodyBack.style.position = "absolute";
      bodyBack.style.width = "100%";
      bodyBack.style.height = (arrayPageSize[1] + 35 + 'px');
      bodyBack.style.zIndex = 98;
      bodyBack.style.top = 0;
      bodyBack.style.left = 0;
      
      bodyBack.style.filter = "alpha(opacity=50)";
      bodyBack.style.opacity = 0.5;
      bodyBack.style.background = "#ddf";
      
     //实现弹出(插入到目标元素之后)
      var mybody = document.getElementById(objId);
      insertAfter(popupDiv,mybody);//执行函数insertAfter()
      insertAfter(bodyBack,mybody);//执行函数insertAfter()
     
     }
     
    //显示背景层
     document.getElementById("bodybg").style.display = "";
    //显示内容层
     var popObj=document.getElementById("popupAddr");
     popObj.innerHTML = document.getElementById(conId).innerHTML;
     var content=document.getElementById("tabcontent3");
     content.innerHTML="<iframe src=\""+mUrl+"\" height=\"350\" width=\"100%\" frameborder=\"0\"></iframe>";
     popObj.style.display = "";
    //让弹出层在页面中垂直左右居中(统一)
    // popObj.style.width = "600px";
    // popObj.style.height = "400px";
    // popObj.style.top = arrayPageScroll[1] + (arrayPageSize[3] - 35 - 400) / 2 + 'px';
    // popObj.style.left = (arrayPageSize[0] - 20 - 600) / 2 + 'px';
    //让弹出层在页面中垂直左右居中(个性)
     var arrayConSize=getConSize(conId)
     popObj.style.top = arrayPageScroll[1] + (arrayPageSize[3] - arrayConSize[1]) / 2-50 + 'px';
     popObj.style.left = (arrayPageSize[0] - arrayConSize[0]) / 2 -30 + 'px';
    }
    //获取内容层内容原始尺寸
    function getConSize(conId){
    var conObj=document.getElementById(conId)
    conObj.style.position = "absolute";
    conObj.style.left=-1000+"px";
    conObj.style.display="";
    var arrayConSize=[conObj.offsetWidth,conObj.offsetHeight]
    conObj.style.display="none";
    return arrayConSize;
    }
    function insertAfter(newElement,targetElement){//插入
     var parent = targetElement.parentNode;
     if(parent.lastChild == targetElement){
      parent.appendChild(newElement);
     }
     else{
      parent.insertBefore(newElement,targetElement.nextSibling);
     }
    }
    //获取滚动条的高度
    function getPageScroll(){
     var yScroll;
     if (self.pageYOffset) {
      yScroll = self.pageYOffset;
     } else if (document.documentElement && document.documentElement.scrollTop){
      yScroll = document.documentElement.scrollTop;
     } else if (document.body) {
      yScroll = document.body.scrollTop;
     }
     
     arrayPageScroll = new Array('',yScroll)
     return arrayPageScroll;
    }
    //获取页面实际大小
    function getPageSize(){
     var xScroll,yScroll;
     
     if (window.innerHeight && window.scrollMaxY){
      xScroll = document.body.scrollWidth;
      yScroll = window.innerHeight + window.scrollMaxY;
     } else if (document.body.scrollHeight > document.body.offsetHeight){
      sScroll = document.body.scrollWidth;
      yScroll = document.body.scrollHeight;
     } else {
      xScroll = document.body.offsetWidth;
      yScroll = document.body.offsetHeight;
     }
     
     var windowWidth,windowHeight;
     //var pageHeight,pageWidth; 
     if (self.innerHeight) {
      windowWidth = self.innerWidth;
      windowHeight = self.innerHeight;
     } else if (document.documentElement && document.documentElement.clientHeight) {
      windowWidth = document.documentElement.clientWidth;
      windowHeight = document.documentElement.clientHeight;
     } else if (document.body) {
      windowWidth = document.body.clientWidth;
      windowHeight = document.body.clientHeight;
     }
     
     var pageWidth,pageHeight
     if(yScroll < windowHeight){
      pageHeight = windowHeight;
     } else {
      pageHeight = yScroll;
     }
     if(xScroll < windowWidth) {
      pageWidth = windowWidth;
     } else {
      pageWidth = xScroll;
     }
     arrayPageSize = new Array(pageWidth,pageHeight,windowWidth,windowHeight)
     return arrayPageSize;
    }
    //关闭弹出层
    function closeLayer(){
     document.getElementById("popupAddr").style.display = "none";
     document.getElementById("bodybg").style.display = "none";
     return false;
    }
    
        //拖拽
    //对“拖动点”定义：onMousedown="StartDrag(this)" onMouseup="StopDrag(this)" onMousemove="Drag(this)"即可
    var move=false,oldcolor,_X,_Y;
    function StartDrag(obj){  //定义准备拖拽的函数
        obj.setCapture(); //对当前对象的鼠标动作进行跟踪
        oldcolor=obj.style.backgroundColor;
        obj.style.background="#999";
        move=true;
        //获取鼠标相对内容层坐标
        var parentwin=document.getElementById("popupAddr");
        _X=parentwin.offsetLeft-event.clientX
        _Y=parentwin.offsetTop-event.clientY
    }
    function Drag(obj){        //定义拖拽函数
        if(move){
            var parentwin=document.getElementById("popupAddr");
            parentwin.style.left=event.clientX+_X;
            parentwin.style.top=event.clientY+_Y;
        }
    }
    function StopDrag(obj){   //定义停止拖拽函数
        obj.style.background=oldcolor;
        obj.releaseCapture(); //停止对当前对象的鼠标跟踪
        move=false;
    }