var URL='popup.html';
var WinAttributes='width=450,height=330,toolbars=no,scrollbars=yes,resizable=no,left=0,top=0,screenX=0,screenY=0'; 
if(!GetCookie('Popup')) {
 document.cookie = 'Popup=1;path=/';
 if (document.cookie.indexOf('Popup=') != -1){
	Popup_NewWin=window.open(URL,'Popup_Win',WinAttributes);
	window.focus();
 }
}
function GetCookie(name) {
thisCookie=document.cookie.split("; ");
for (i=0; i<thisCookie.length;i++) {
	if (thisCookie[i].split('=')[0] == name) {
		return true;
	}
}
return false;
}