function winOpen (adr, name, w, h, scr) {
	par = "left=" + Math.floor((screen.width-w)/2) + ",width=" + w;
	par += ",top=" + Math.floor((screen.height-h)/2) + ",height=" + h;
	par += ",scrollbars=" + (scr?"yes":"no");
	par += ",resizable=" + (scr?"yes":"no");
	return window.open (adr, name, par);
}

function reageer(tid) {
	winOpen ("http://www.video4all.nl/src/win_react.php?tp=0&tid="+tid, "", 535, 300, true);
}

function disclaimer() {
	winOpen ("disclmr.php", "", 375, 550, true);
}

function colofon() {
	winOpen ("colofon.php", "", 375, 550, true);
}