function popwait(){
var mb=document.getElementById("mainbackground");
var clientBounds=$common.getClientBounds();
var clientWidth=clientBounds.width;
var clientHeight=clientBounds.height;
mb.style.position='absolute';
mb.style.left=0;mb.style.top=0;mb.style.zIndex=9999;      
mb.style.width=clientWidth;
var extras=(document.body.scrollHeight-clientHeight);
if(extras<0) extras=0;
mb.style.height=clientHeight+extras;
mb.style.display='block';
mb.style.visibility='visible';
mb=document.getElementById("mainwaitpopup");
mb.style.position='absolute';
mb.style.left=clientWidth/2-175;
mb.style.top=(clientHeight+extras)/2-50;    
mb.style.zIndex=10000;
mb.style.display='block';
mb.style.visibility='visible';
setTimeout("document.getElementById('im_wait2').src=document.getElementById('im_wait2').src;",10);
}
function unpopwait()
{
var mb=document.getElementById("mainbackground");
if(mb)
{
mb.style.left=0;mb.style.top=0;mb.style.height=0;mb.style.width=0;    
mb.style.display='none';
mb.style.visibility='hidden';
}
mb=document.getElementById("mainwaitpopup");
if(mb)
{
mb.style.display='none';
mb.style.visibility='hidden';
}
}