nMaxItem = 4;
NameIndex = 0;
DefaultState = 1;

MouseOverState = 2;
MouseDownState = 3;
imgCounter = 0;

ImageList = new Array();

bIsSupportOK = (
	((navigator.appName == "Netscape") && (parseInt(navigator.appVersion) >= 3 )) ||
	((navigator.appName == "Microsoft Internet Explorer") && (parseInt(navigator.appVersion) >= 4 )) 
);

function AddImageToImageList(name, Default, MouseOver, MouseDown)
{
	ImageList[imgCounter] = new Array(nMaxItem);
	ImageList[imgCounter][NameIndex] = name;
	ImageList[imgCounter][DefaultState] = new Image();
	ImageList[imgCounter][DefaultState].src = Default;
	if (MouseOver != "") {
		ImageList[imgCounter][MouseOverState] = new Image();
		ImageList[imgCounter][MouseOverState].src = MouseOver;
	}
	if (MouseDown != "") {
		ImageList[imgCounter][MouseDownState] = new Image();
		ImageList[imgCounter][MouseDownState].src = MouseDown;
	}

	imgCounter++;
}

function ReplaceImage(name, state)
{
	for (i = 0; i < imgCounter; i++) {
		if (document.images[ImageList[i][NameIndex]] != null) {
			if ((name == ImageList[i][NameIndex]) && (ImageList[i][state] != null))
				document.images[name].src = ImageList[i][state].src;
		}
	}
}
AddImageToImageList("tag_navkont", "images/navkont.gif", "images/navkont2.gif", "images/navkont2.gif");
AddImageToImageList("tag_navimp", "images/navimp.gif", "images/navimp2.gif", "images/navimp2.gif");
AddImageToImageList("tag_navhaft", "images/navhaft.gif", "images/navhaft2.gif", "images/navhaft2.gif");
AddImageToImageList("tag_navhome", "images/navhome.gif", "images/navhome2.gif", "images/navhome2.gif");
AddImageToImageList("tag_navakt", "images/navakt.gif", "images/navakt2.gif", "images/navakt2.gif");
AddImageToImageList("tag_navvor", "images/navvor.gif", "images/navvor2.gif", "images/navvor2.gif");
AddImageToImageList("tag_navwir", "images/navwir.gif", "images/navwir2.gif", "images/navwir2.gif");
AddImageToImageList("tag_navchor", "images/navchor.gif", "images/navchor2.gif", "images/navchor2.gif");
AddImageToImageList("tag_navterm", "images/navterm.gif", "images/navterm2.gif", "images/navterm2.gif");
AddImageToImageList("tag_navfor", "images/navfor.gif", "images/navfor2.gif", "images/navfor2.gif");
AddImageToImageList("tag_navdown", "images/navdown.gif", "images/navdown2.gif", "images/navdown2.gif");