function popWin(winURL, winName, winWidth, winHeight)
{
	var winLeft = (screen.width - winWidth) / 2; 
	var winTop = (screen.height / 2 - winHeight) / 2; 
	winProps = 'width='+winWidth+',height='+winHeight+',left='+winLeft+',top='+winTop+'';
	theWin = window.open('', winName, winProps) ;

	theWin.document.body.style.backgroundImage = 'url('+winURL+')';
	theWin.document.body.style.backgroundRepeat = "no-repeat";
	
	
	
	if (parseInt(navigator.appVersion) >= 4)
	{
		theWin.window.focus();
	} 
}