function imageSwitch(id, src) {
	var d = document;
	if (d.images && d.images[id]) {
		d.images[id].src = src;
	}
}
function toggleVarSelect(id, v) {
	var d = document;
	if (d[v]) {
		if (d.getElementById(d[v])) {
			var k = d.getElementById(d[v]);
			k.style.display = "none";
		}
	}
	d[v] = id;
	if (d[v] != "") {
		var e = d.getElementById(d[v]);
		e.style.display = "block";
	}
}
function toggleMultiDisplay(off, on) {
	var d = document;
	if (d.getElementById) {
		var e1 = d.getElementById(off);
		var e2 = d.getElementById(on);
		if (e1) e1.style.display = "none";
		if (e2) e2.style.display = "block";
	}
}
function openWindow(page, title, w, h, scroll) {
  x = (screen.width - w) / 2;
  y = (screen.height - h) / 2;
  
 	//var pop = window.open(page, title, 'toolbar=0, location=0, directories=0, status=1, menubar=0, scrollbars=' + scroll + ', width=' + w + ', height=' + h + ',resizable=0');
  var pop = window.open(page, title, 'height=' + h + ',width=' + w + ',top=' + y + ',left=' + x + ',scrollbars=no,location=no,toolbar=no,resizable=no,menubar=no');
 	pop.focus();
}
function openFriendlyWindow(page, title) {
 	var pop = window.open(page, title);
 	pop.focus();
}
function centerWindow(w, h) {
	var sw = screen.width
	var sh = screen.height
	var l = Math.round((sw/2) - (w/2))
	var t = (Math.round((sh/2) - (h/2)))-50;
	window.moveTo(l, t)
}