leftPos=(screen.width)?(screen.width-772)/2 : 0;
topPos=(screen.height)?(screen.height-530)/2 : 0;
var bannerWin = null;
function popWin(url) {
	if (bannerWin) {
		bannerWin.close();
	}
	if (FlashInstalled==true) 
	{	
		bannerWin = window.open('main.html?cIndex='+url+'', 'main', 'left='+leftPos+',top='+topPos+',width=772,height=530,resize=no,scrollbars=no,toolbar=no');
	}
	else
	{
		document.location.href="upgrade.html";
	}	
}