// Handles rollover images for NN3+ and IE4+
var loaded = new Array();
var aktImage = "";

function F_loadRollover(image,imageName) {
	if (image && image.src &&
		(null == image.out || typeof(image.out) == typeof(void(0)))) {
		s = image.src;
		image.out = new Image();
		image.out.src = s;
		image.over = new Image();
		if (imageName.lastIndexOf('/') >= 0 || imageName.lastIndexOf('\\') >= 0) {
			s = imageName;
		} else {
			i = s.lastIndexOf('/');
			if (i<0) i = s.lastIndexOf('\\');
			if (i<0) { s = imageName; }
			else	 { s = s.substring(0,i+1) + imageName; }
		}
		image.over.src = s;
		loaded[image.name] = image;
	}
}

function F_clicked (imageName) {
	var oldImage= "";
	if (aktImage != "") {
		oldImage = aktImage;
	}
	aktImage = imageName;
	if (parent.topFrame) {
		if (parent.topFrame.Topic) {
			parent.topFrame.Topic=aktImage;
		}
	}
	if (oldImage != "") {
		F_roll(oldImage,0);
	}
}

function F_roll(imageName,over) {
	if (document.images && imageName != aktImage) {
		if (over) { imageObject = "over"; }
		else	  { imageObject = "out"; }
		image = loaded[imageName];
		if (image) {
			ref = eval("image."+imageObject);
			if (ref) image.src = eval("image."+imageObject+".src");
		}
		if (window.event)
			window.event.cancelBubble = true;
	}
}