image0 = new Image(); image0.src = "images/universal/home_button_off.gif";
image1 = new Image(); image1.src = "images/universal/help_button_on.gif";
image2 = new Image(); image2.src = "images/universal/contact_button_on.gif";
image3 = new Image(); image3.src = "images/universal/login_button_on.gif";


function turnOn(b_on) {
	var onUrl = ("images/universal/" + b_on + "_on.gif");
	document.images[b_on].src = onUrl;
}

function turnOff(b_off) {
	var offUrl = ("images/universal/" + b_off + "_off.gif");
	document.images[b_off].src = offUrl;
}

function rollOn(m_on) {
	document.getElementById(m_on).style.visibility = 'visible';
}

function rollOff(m_on) {
	document.getElementById(m_on).style.visibility = 'hidden';
}