function show(tips,flag,url){
var my_tips=document.all.mytips;
if(flag){
    my_tips.style.display="";
    if (url!=null){my_tips.innerHTML="<img src='"+url+"'align=left>"+tips;}
    else{ my_tips.innerHTML=tips;}
    my_tips.style.left=event.clientX+10;
    my_tips.style.top=event.clientY+10;
   }
else 
  {
   my_tips.style.display="none";
   }
}