var handle;   
function start()   
{   
 var obj = document.getElementById("tip");   
 if (parseInt(obj.style.height)==0)   
 { obj.style.display="block";   
  handle = setInterval("changeH('up')",2);   
 }else  
 {   
     handle = setInterval("changeH('down')",2)    
 }    
}   
function changeH(str)   
{   
 var obj = document.getElementById("tip");   
 if(str=="up")   
 {   
  if (parseInt(obj.style.height)>239)   
   clearInterval(handle);   
  else  
   obj.style.height=(parseInt(obj.style.height)+8).toString()+"px";   
 }   
 if(str=="down")   
 {   
  if (parseInt(obj.style.height)<8)   
  { clearInterval(handle);   
   obj.style.display="none";   
  }   
  else     
   obj.style.height=(parseInt(obj.style.height)-8).toString()+"px";    
 }   
}   

var str="";
     str+="<div id='tip' style='position: absolute;right: 0px;bottom: 0px;height:0px;width: 204px;padding: 0px;overflow:hidden;display:none;font-size:12px;z-index:10;border:1px solid #6FA1B8'>"
     str+="<iframe height='340' scrolling='no' align='top' border='0' frameborder='0'  width='250' src='msg.php' > </iframe>"
     str+="</div> "
	document.write(str);



function sc5(){
 document.getElementById("tip").style.top=(document.documentElement.scrollTop+document.documentElement.clientHeight-document.getElementById("tip").offsetHeight)+"px";
 document.getElementById("tip").style.left=(document.documentElement.scrollLeft+document.documentElement.clientWidth-document.getElementById("tip").offsetWidth)+"px";
  //document.getElementById("tip").style.left=(document.documentElement.scrollLeft+document.documentElement.clientWidth)+"px";
}

function scall(){
sc5();
}
window.onscroll=scall;
window.onresize=scall;
//window.onload=scall;

start()