//detect browser:
browserName = navigator.appName;
browserVer = parseInt(navigator.appVersion);
if (browserName == "Netscape" && browserVer >= 3) browserVer = "1";
else if (browserName == "Microsoft Internet Explorer" && browserVer == 4) browserVer = "1";
else browserVer = "2";

//preload images:
if (browserVer == 1) {
	heada = new Image();
	heada.src = "images/layout-3_09.png";
	headaOver = new Image();
	headaOver.src = "images/layout-3-highlight_09.png";

	headb = new Image();
	headb.src = "images/layout-3_11.png";
	headbOver = new Image();
	headbOver.src = "images/layout-3-highlight_11.png";

	headc = new Image();
	headc.src = "images/layout-3_13.png";
	headcOver = new Image();
	headcOver.src = "images/layout-3-highlight_13.png";

	menua = new Image();
	menua.src = "images/layout-3_16.png";
	menuaOver = new Image();
	menuaOver.src = "images/layout-3-highlight_16.png";

	menub = new Image();
	menub.src = "images/layout-3_18.png";
	menubOver = new Image();
	menubOver.src = "images/layout-3-highlight_18.png";

	menuc = new Image();
	menuc.src = "images/layout-3_20.png";
	menucOver = new Image();
	menucOver.src = "images/layout-3-highlight_20.png";

	menud = new Image();
	menud.src = "images/layout-3_22.png";
	menudOver = new Image();
	menudOver.src = "images/layout-3-highlight_22.png";

	menue = new Image();
	menue.src = "images/layout-3_24.png";
	menueOver = new Image();
	menueOver.src = "images/layout-3-highlight_24.png";

	menuf = new Image();
	menuf.src = "images/layout-3_26.png";
	menufOver = new Image();
	menufOver.src = "images/layout-3-highlight_26.png";

	menug = new Image();
	menug.src = "images/layout-3_28.png";
	menugOver = new Image();
	menugOver.src = "images/layout-3-highlight_28.png";
}

//image swapping function:
function hiLite(imgDocID, imgObjName, comment) {
	if (browserVer == 1) {
		document.images[imgDocID].src = eval(imgObjName + ".src");
		window.status = comment; return true;
	}
}