//menu buttons
var authorsOn = new Image();
var authorsOff = new Image();

var featuredOn = new Image();
var featuredOff = new Image();

var readersOn = new Image();
var readersOff = new Image();

var historyOn = new Image();
var historyOff = new Image();

var searchOn = new Image();
var searchOff = new Image();

var nanataleseOn = new Image();
var nanataleseOff = new Image();

var religionOn = new Image();
var religionOff = new Image();

var currencyOn = new Image();
var currencyOff = new Image();

var blackinkOn = new Image();
var blackinkOff = new Image();

var graphicOn = new Image();
var graphicOff = new Image();

//menu buttons source
authorsOn.src="/doubleday/art/nav_authors_on.gif";
authorsOff.src="/doubleday/art/nav_authors.gif";

featuredOn.src="/doubleday/art/nav_featured_on.gif";
featuredOff.src="/doubleday/art/nav_featured.gif";

readersOn.src="/doubleday/art/nav_readers_on.gif";
readersOff.src="/doubleday/art/nav_readers.gif";

historyOn.src="/doubleday/art/nav_history_on.gif";
historyOff.src="/doubleday/art/nav_history.gif";

searchOn.src="/doubleday/art/nav_search_on.gif";
searchOff.src="/doubleday/art/nav_search.gif";

nanataleseOn.src="/doubleday/art/imp_nanatalese_on.gif";
nanataleseOff.src="/doubleday/art/imp_nanatalese.gif";

religionOn.src="/doubleday/art/imp_religion_on.gif";
religionOff.src="/doubleday/art/imp_religion.gif";

currencyOn.src="/doubleday/art/imp_currency_on.gif";
currencyOff.src="/doubleday/art/imp_currency.gif";

blackinkOn.src="/doubleday/art/imp_blackink_on.gif";
blackinkOff.src="/doubleday/art/imp_blackink.gif";

graphicOn.src="/doubleday/art/imp_graphic_on.gif";
graphicOff.src="/doubleday/art/imp_graphic.gif";

// Change RollOver
function menuRollOn(imgname){ //use this for mouseover on images NOT on layers
		if (document.all){
			eval('document.images.'+imgname+'.src='+imgname+'On.src');
		} else if (document.layers) {
			eval('document.'+imgname+'.src='+imgname+'On.src');
		} else if (document.getElementById&&!document.all) {
			eval('document.getElementById("'+imgname+'").src='+imgname+'On.src');
			//eval('document.'+imgname+'.src='+imgname+'On.src');
		}		
}

// Revert to Default Image
function menuRollOff(imgname) { //use this for mouseout on images NOT on layers
		if (document.all) {
			eval('document.images.'+imgname+'.src='+imgname+'Off.src');
		} else if (document.layers) {
			eval('document.'+imgname+'.src='+imgname+'Off.src');
		} else if (document.getElementById&&!document.all) {
			// doesn't work -- eval('document.'+imgname+'.setAttribute("src","'+imgname+'Off.src")');
			eval('document.getElementById("'+imgname+'").src='+imgname+'Off.src');
		}	  
}