function preloadImages(lImages) {
	aImages = lImages.split(',');
	
	for(i=0; i< aImages.length; i++) {
		eval('img' + i + ' = new Image()');
		eval('img' + i + '.src = \'/images/' + aImages[i] + '\'');
	}
}

function imgSwap(imgName, newSrc) {
	document.images[imgName].src = '/images/' + newSrc;
	return true;
}

function imgon(imgname) {
	if (document.images) {
	document[imgname].src =  eval (imgname + "in.src"); }
	
}

function imgoff(imgname) {
	if (document.images) {
	document[imgname].src = eval (imgname + "out.src"); }
}

function topnavimgon(imgid) {
	imgSwap("nav_" + imgid, "nav_" + imgid + "_1.gif"); 
}

function topnavimgoff(imgid) {
	imgSwap("nav_" + imgid, "nav_" + imgid + "_" + aTopNav_defaultStates[imgid] + ".gif"); 
}