js显示div层（获取焦点当前信息并弹出div层）

var CallPopup = window.createPopup();
var xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
var style = "0";
var x = 0;
var y = 0;
function ShowTitle(CallID)
{
 x = event.clientX;
 y = event.clientY;
 if(style == "0")
 {
  var JHBaseMessage_PopupMenuDoc=CallPopup.document;
  var oStyle= JHBaseMessage_PopupMenuDoc.createStyleSheet("link");    
  var oPageStyle = document.getElementById("PageStyle");
  oStyle.href=oPageStyle.href;
  style ="1";
 }
 //给Popup窗体添加样式表
 xmlHttp.Open("POST", "CallRelateUsers.aspx?ID="+CallID, true);
 xmlHttp.onreadystatechange = MyTitle;
 xmlHttp.Send();
}
///修改人：蒋海斌；
///修改时间：2008-12-28 09:11
///修改原因：添加函数，用于保留信息显示页面“发送人”列相关信息显示
function ShowTitle1(CallID)
{
 x = event.clientX;
 y = event.clientY;
 if(style == "0")
 {
  var JHBaseMessage_PopupMenuDoc=CallPopup.document;
  var oStyle= JHBaseMessage_PopupMenuDoc.createStyleSheet("link");    
  var oPageStyle = document.getElementById("PageStyle");
  oStyle.href=oPageStyle.href;
  style ="1";
 }
 //给Popup窗体添加样式表
 xmlHttp.Open("POST", "CallRelateUsers.aspx?savecallindex=1&ID="+CallID, true);
 xmlHttp.onreadystatechange = MyTitle;
 xmlHttp.Send();
}
function MyTitle()
{ 
 if(xmlHttp.readyState==4)
 {
  var rValue = xmlHttp.responseText;
  if(rValue!="")
  {
   var str = "<div id=Div style='overflow:auto;width:100%;height:200;margin-top:0;margin-left:0;margin-right:0;font-size:9pt;padding:5 5;'>" + rValue + "</div>";
   CallPopup.document.body.innerHTML = "<table id='a1' cellSpacing=0 cellPadding=0><tr><td>" + str+"</td></tr></table>";
   CallPopup.document.body.style.border="1 #000000 solid";
    var oDivHeight = CallPopup.document.all.Div.scrollHeight;
    var oDivWidth = CallPopup.document.all.a1.offsetWidth;
    if(oDivHeight < 200)
    {
     if(oDivWidth> 400)
     {
      CallPopup.show(x,y,400,oDivHeight+16,document.body);
     }
     else
     {
      CallPopup.show(x,y,oDivWidth+10,oDivHeight+16,document.body);
     }  
    }
    else
    {
     CallPopup.show(x,y,400,200,document.body);
    }
   }
   else
   {
    CallPopup.hide();
   }
 }
 else
 {
  CallPopup.document.body.innerHTML = "<div align=center style='padding:5 5;height:100%;width:100%;font-size:9pt'>Loading...</div>"        
  CallPopup.document.body.style.border="1 #000000 solid";
  CallPopup.show(x,y,200,30,document.body); 
  //x = event.clientX;
  //y = event.clientY;
 }
}
function HiddenTitle()
{
 //CallPopup.hide();//出现滚动条的时候鼠标移出隐藏的话不行，所以还是去掉隐藏。
}