var NewWin = null; 
// JavaScript Document
function WinOpen(url) 
{
if(!NewWin || NewWin.closed) 
	{
	NewWin=LoadWin(url,'win_poll',418,302);
	}
else
	{NewWin.focus();}
} 
function LoadWin(url, name, width, height) 
{
var str='scrollbars,resizable,location,height='+height+',innerHeight='+height+',width='+width+',innerWidth='+width; 
if(window.screen) 
{
var ah=screen.availHeight-30; 
var aw=screen.availWidth-10; 
var xc=(aw-width)/2; 
var yc=(ah-height)/2; 
str +=',left='+xc+',screenX='+xc; str +=',top='+yc+',screenY='+yc;
} 
//document.research.submit();
return window.open(url,name,str); 
}