if (document.images) {

	var menuCorporateOn = new Image();
	menuCorporateOn.src = "images/menuCorporateOn.gif";

	var menuCorporateOff = new Image();
	menuCorporateOff.src = "images/menuCorporateOff.gif";

	var menuIndustriesOn = new Image();
	menuIndustriesOn.src = "images/menuIndustriesOn.gif";

	var menuIndustriesOff = new Image();
	menuIndustriesOff.src = "images/menuIndustriesOff.gif";

	var menuServicesOn = new Image();
	menuServicesOn.src = "images/menuServicesOn.gif";

	var menuServicesOff = new Image();
	menuServicesOff.src = "images/menuServicesOff.gif";

	var menuProductsOn = new Image();
	menuProductsOn.src = "images/menuProductsOn.gif";

	var menuProductsOff = new Image();
	menuProductsOff.src = "images/menuProductsOff.gif";
}

function On(imgName) {

	if (document.images) {
		document[imgName].src = eval(imgName + "On.src");	
	}
	
}

function Off(imgName) {

	if (document.images) {
		document[imgName].src = eval(imgName + "Off.src");	
	}
	
}