function rollOver(normal, hover) {
	if (document.images) {
		this.normal = new Image();
		this.normal.src = normal;
		this.hover = new Image();
		this.hover.src = hover;
	}
}

function actMenuItem(name) {
	if (document.images) {
		eval("document.images['" + name + "'].src = " + name + ".hover.src;");
	}
}

function inactMenuItem(name) {
	if (document.images)
		eval("document.images['" + name + "'].src = " + name + ".normal.src;");
}

var home = new rollOver("images/header/home.gif","images/header/home-on.gif");
var news = new rollOver("images/header/news.gif","images/header/news-on.gif");
var indepth = new rollOver("images/header/indepth.gif","images/header/indepth-on.gif");
var support = new rollOver("images/header/support.gif","images/header/support-on.gif");
var who = new rollOver("images/header/who.gif","images/header/who-on.gif");
var contact = new rollOver("images/header/contact.gif","images/header/contact-on.gif");