function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

function OpenWindow(url, w, h) {
	open(url, "", 'menubar=no,directories=no,location=no,resizable=no, target=viv scrollbars=no,width='+w +',height='+h);
}

function changeImages() {
	if (document.images && (preloadFlag == true)) {
		for (var i=0; i<changeImages.arguments.length; i+=2) {
			document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
		}
	}
}

var preloadFlag = false;
function preloadImages() {
	if (document.images) {
		id02_over = newImage("img/menu-about-activ.gif");
		id03_over = newImage("img/menu-prod-activ.gif");
		id04_over = newImage("img/menu-gallery-activ.gif");
		id05_over = newImage("img/menu-exp-activ.gif");
		preloadFlag = true;
	}
}


var IE = (navigator.appName == "Microsoft Internet Explorer") ? 1 : 0;
var NS = (navigator.appName == "Netscape") ? 1 : 0;
var star = 0;
var lay;
var this_lay;

function SetLayer(arg) {
	if (this_lay) {
		clearTimeout(this_lay);
	}
	if (star) {
		HideAll();
	}
	if(IE){
		document.all["g" + arg].style.visibility = 'visible';
	}
	if(NS){
		document.layers["g" + arg].visibility='visible';
	}
	star = 1;
}

function timeHide(){
this_lay=setTimeout('HideAll()',500);
}

function HideLayer(lay) {
if(IE){
document.all["g" + lay].style.visibility = "hidden";
}
if(NS){
document.layers["g" + lay].visibility="hidden"
}
}

function HideAll() {
	HideLayer(2);
	HideLayer(3);
	HideLayer(4);
	HideLayer(5);

}

function mOn() { clearTimeout(this_lay); }