var tPopWait=50;    //停留tWait豪秒后显示提示。
 var tPopShow=6000;    //显示tShow豪秒后关闭提示
 var showPopStep=20;
 var popOpacity=95;
 var tfontcolor="#000000";
 var tbgcolor="#ededed";
 var tbordercolor="#808080";
 //***************内部变量定义*****************
 var sPop=null,curShow=null,tFadeOut=null,tFadeIn=null,tFadeWaiting=null;
 document.write("<style type='text/css'id='defaultPopStyle'>");
 document.write(".cPopText {  background-color: " + tbgcolor + ";color:" + tfontcolor + "; border: 1px " + tbordercolor + " solid;font-color: font-size: 12px; padding-right: 4px; padding-left: 4px; height: 20px; padding-top: 2px; padding-bottom: 2px; filter: Alpha(Opacity=0)}");
 document.write("</style>");
 document.write("<div id='dypopLayer' style='position:absolute;z-index:1000;' class='cPopText'></div>");
 function showPopupText()
 {
   var o=event.srcElement;
   MouseX=event.x;
   MouseY=event.y;
   if(o.alt!=null && o.alt!=""){o.dypop=o.alt;o.alt=""};
   if(o.title!=null && o.title!=""){o.dypop=o.title;o.title=""};
   if(o.dypop!=sPop)
   {
     sPop=o.dypop;
     clearTimeout(curShow);
     clearTimeout(tFadeOut);
     clearTimeout(tFadeIn);
     clearTimeout(tFadeWaiting);  
     if(sPop==null || sPop=="")
     {
       dypopLayer.innerHTML="";
       dypopLayer.style.filter="Alpha()";
       dypopLayer.filters.Alpha.opacity=0;  
     }
     else
     {
       if(o.dyclass!=null) popStyle=o.dyclass 
       else popStyle="cPopText";
       curShow=setTimeout("showIt()",tPopWait);
     }
   }
 }
 function showIt()
 {
   dypopLayer.className=popStyle;
   dypopLayer.innerHTML=sPop;
   popWidth=dypopLayer.clientWidth;
   popHeight=dypopLayer.clientHeight;
   if(MouseX+12+popWidth>document.body.clientWidth) popLeftAdjust=-popWidth-24
     else popLeftAdjust=0;
   if(MouseY+12+popHeight>document.body.clientHeight) popTopAdjust=-popHeight-24
     else popTopAdjust=0;
   dypopLayer.style.left=MouseX+12+document.body.scrollLeft+popLeftAdjust;
   dypopLayer.style.top=MouseY+12+document.body.scrollTop+popTopAdjust;
   dypopLayer.style.filter="Alpha(Opacity=0)";
   fadeOut();
 }
 function fadeOut(){
   if(dypopLayer.filters.Alpha.opacity<popOpacity)
   {
     dypopLayer.filters.Alpha.opacity+=showPopStep;
     tFadeOut=setTimeout("fadeOut()",1);
   }
   else
   {
     dypopLayer.filters.Alpha.opacity=popOpacity;
     tFadeWaiting=setTimeout("fadeIn()",tPopShow);
   }
 }
 function fadeIn()
 {
   if(dypopLayer.filters.Alpha.opacity>0)
   {
     dypopLayer.filters.Alpha.opacity-=1;
     tFadeIn=setTimeout("fadeIn()",1);
   }
 }
 document.onmouseover=showPopupText;