//var contentarea;

// Preload navigation images

welcome_on = new Image();
welcome_on.src = "/grafx/nav/welcome_on.jpg";
welcome_off = new Image();
welcome_off.src = "/grafx/nav/welcome_off.jpg";

contents_on = new Image();
contents_on.src = "/grafx/nav/contents_on.jpg";
contents_off = new Image();
contents_off.src = "/grafx/nav/contents_off.jpg";

neteru_on = new Image();
neteru_on.src = "/grafx/nav/neteru_on.jpg";
neteru_off = new Image();
neteru_off.src = "/grafx/nav/neteru_off.jpg";

maat_on = new Image();
maat_on.src = "/grafx/nav/maat_on.jpg";
maat_off = new Image();
maat_off.src = "/grafx/nav/maat_off.jpg";

heka_on = new Image();
heka_on.src = "/grafx/nav/heka_on.jpg";
heka_off = new Image();
heka_off.src = "/grafx/nav/heka_off.jpg";

netra_on = new Image();
netra_on.src = "/grafx/nav/netra_on.jpg";
netra_off = new Image();
netra_off.src = "/grafx/nav/netra_off.jpg";

resources_on = new Image();
resources_on.src = "/grafx/nav/resources_on.jpg";
resources_off = new Image();
resources_off.src = "/grafx/nav/resources_off.jpg";

community_on = new Image();
community_on.src = "/grafx/nav/community_on.jpg";
community_off = new Image();
community_off.src = "/grafx/nav/community_off.jpg";


function imgOn(imgName) {

	if (document.images) {

		document.images[imgName].src = eval(imgName + "_on.src");

	}

}

function imgOff(imgName) {

	if ((document.images) && (imgName != contentarea)) {

		document.images[imgName].src = eval(imgName + "_off.src");

	}

}