function openPopup(url) {
	var props = "screenX=400";
	props = props + ",screenY=200";
	props = props + ",width=650";
	props = props + ",height=500";
	props = props + ",resizable=yes";
	props = props + ",menubar=no";
	props = props + ",scrollbars=yes";
	props = props + ",toolbar=no";
	window.open(url, 'FREITAG', props);
}

function openPopup(url, width, height) {
	var props = "screenX=400";
	props = props + ",screenY=200";
	props = props + ",width=" + width;
	props = props + ",height=" + height;
	props = props + ",resizable=yes";
	props = props + ",menubar=no";
	props = props + ",scrollbars=yes";
	props = props + ",toolbar=no";
	window.open(url, 'FREITAG', props);
}