if (document.images) {

			rtbon = new Image();
            rtbon.src = "/rtb/images/header/rtb.gif";
			ampanon = new Image();
            ampanon.src = "/rtb/images/header/ampan.gif";
			durashieldon = new Image();
            durashieldon.src = "/rtb/images/header/durashield.gif";
			pangloon = new Image();
            pangloon.src = "/rtb/images/header/panglo.gif";
			panglo_amon = new Image();
            panglo_amon.src = "/rtb/images/header/panglo_am.gif";
			panglo_mexon = new Image();
            panglo_mexon.src = "/rtb/images/header/panglo_mex.gif";
}

function img_act(imgName) {
	if (document.images){
    	imgOn = eval(imgName + "on.src");
        document ['header'].src = imgOn;		
    }
}

function img_end(imgName) {
	if (document.images){
        document ['header'].src = "/rtb/images/muffin_icons/bundy_family.gif";
    }
}