isamap = new Object();
isamap[0] = "_df"
isamap[1] = "_ov"
isamap[2] = "_ot"
isamap[3] = "_dn"

function isimgact(id, act)
{
	if(document.images) document.images[id].src = eval( "isimages." + id + isamap[act] + ".src");
}

if (document.images) { // ensure browser can do JavaScript rollovers.
isimages = new Object();

isimages.checkoffon_df = new Image();
isimages.checkoffon_df.src = "images/about-off.gif";

isimages.checkoffon_ov = new Image();
isimages.checkoffon_ov.src = "images/about-on.gif";

isimages.checkoffon1_df = new Image();
isimages.checkoffon1_df.src = "images/quote-off.gif";

isimages.checkoffon1_ov = new Image();
isimages.checkoffon1_ov.src = "images/quote-on.gif";

isimages.checkoffon2_df = new Image();
isimages.checkoffon2_df.src = "images/links-off.gif";

isimages.checkoffon2_ov = new Image();
isimages.checkoffon2_ov.src = "images/links-on.gif";

isimages.checkoffon3_df = new Image();
isimages.checkoffon3_df.src = "images/contact-off.gif";

isimages.checkoffon3_ov = new Image();
isimages.checkoffon3_ov.src = "images/contact-on.gif";

isimages.checkoffon4_df = new Image();
isimages.checkoffon4_df.src = "images/home-off.gif";

isimages.checkoffon4_ov = new Image();
isimages.checkoffon4_ov.src = "images/home-on.gif";




}