function HideAll(){
	document.getElementById("products").style.visibility='hidden';
	document.getElementById("manuals").style.visibility='hidden';
	document.getElementById("reviews").style.visibility='hidden';
	}
function Products(){
	document.getElementById("products").style.visibility='visible';
	document.getElementById("manuals").style.visibility='hidden';
	document.getElementById("reviews").style.visibility='hidden';
	}
function Manuals(){
	document.getElementById("products").style.visibility='hidden';
	document.getElementById("manuals").style.visibility='visible';
	document.getElementById("reviews").style.visibility='hidden';
	}
function Reviews(){
	document.getElementById("products").style.visibility='hidden';
	document.getElementById("manuals").style.visibility='hidden';
	document.getElementById("reviews").style.visibility='visible';
	}

function iconOver(iconID, level){
	for (var i=0; i<document.images.length; i++){
		if(document.images[i].name == iconID){
			switch(level){
				case 0: document.images[i].src = "imgs/icons/" + iconID + "_over.gif"; break;
				case 1: document.images[i].src = "../imgs/icons/" + iconID + "_over.gif"; break;
				case 2: document.images[i].src = "../../imgs/icons/" + iconID + "_over.gif"; break;
			}}}}
function iconOut(iconID, level){
	for (var i=0; i<document.images.length; i++){
		if(document.images[i].name == iconID){
			switch(level){
				case 0: document.images[i].src = "imgs/icons/" + iconID + "_.gif"; break;
				case 1: document.images[i].src = "../imgs/icons/" + iconID + "_.gif"; break;
				case 2: document.images[i].src = "../../imgs/icons/" + iconID + "_.gif"; break;
			}}}}