pn1_on = new Image();
	pn1_on.src = "images/mcc_on_pn.gif";
	pn1_off = new Image();
	pn1_off.src = "images/mcc_pn.gif";

	pn2_on = new Image();
	pn2_on.src = "images/gomcon_on.gif";
	pn2_off = new Image();
	pn2_off.src = "images/gomcon.gif";

	home_on = new Image();
	home_on.src = "images/home_on.gif";
	home_off = new Image();
	home_off.src = "images/home.gif";
	
	contact_on = new Image();
	contact_on.src = "images/contact_on.gif";
	contact_off = new Image();
	contact_off.src = "images/contact.gif";

function imgOn(imgName) {
	document[imgName].src = eval(imgName + "_on.src");
}

function imgOff(imgName) {
	document[imgName].src = eval(imgName + "_off.src");
}