function visfilm(urlen,titel,egenskaber,b,h){
	var xMax = screen.width;
	var yMax = screen.height;
	var xOffset = (xMax - b)/2
	var yOffset = (yMax - h)/2;
	var aabner = window.open(urlen,titel,egenskaber + ',width=' + b +',height=' + h +',top='+yOffset+',left='+xOffset+'');
	
	if(aabner.window.focus){
		aabner.window.focus();
	}
}