xRes = screen.width;
yRes = screen.height;

if (xRes >= 800) {
	x = (xRes - 660) / 2;

	extra = 'width=660,height=520,left=' + x +',top=10';
}
else {
	extra = 'width=630,height=420,left=0,top=0';
}

function Quiz() {		
		url = 'http://' + document.domain + '/prijsvraag/index.asp';
		options = 'toolbar=1,location=0,directories=0,status=1,menubar=0,toolbar=1,scrollbars=1,resizable=1,' + extra;
		QuizWin = window.open(url,'QuizWin',options);
}

function Winnaars() {
		url = 'http://' + document.domain + '/prijsvraag/winnaars.asp';	
		options = 'toolbar=1,location=0,directories=0,status=1,menubar=0,toolbar=1,scrollbars=1,resizable=1,' + extra;
		Winaars = window.open(url,'QuizWin',options);
}