function OpenPopUp()
{
	var visit=GetCookie("stellamare");
	if (visit==null){
		var expire=new Date();
		window.open("PopUp.aspx","PopUp","width=630,height=500,status=0,menubar=0");
		expire=new Date(expire.getTime()+ (600 * 1000)); //expire in 10 minutes
		document.cookie="stellamare=here; expires="+expire;
	}
}

function GetCookie(name)
{
	var arg=name+"=";
	var alen=arg.length;
	var clen=document.cookie.length;
	var i=0;
	while (i<clen) {
		var j=i+alen;
		if (document.cookie.substring(i,j)==arg)
			return "here";
		i=document.cookie.indexOf(" ",i)+1;
		if (i==0) break;
	}
	return null;
}