if (document.images) {
	var aaa = new Image();
	aaa.src = "img/nav1a.gif";
	var aan = new Image();
	aan.src = "img/nav1.gif";
	var bba = new Image();
	bba.src = "img/nav2a.gif";
	var bbn = new Image();
	bbn.src = "img/nav2.gif";
	var cca = new Image();
	cca.src = "img/nav3a.gif";
	var ccn = new Image();
	ccn.src = "img/nav3.gif";
	var dda = new Image();
	dda.src = "img/nav4a.gif";
	var ddn = new Image();
	ddn.src = "img/nav4.gif";
	var eea = new Image();
	eea.src = "img/nav5a.gif";
	var een = new Image();
	een.src = "img/nav5.gif";
	var ffa = new Image();
	ffa.src = "img/contact2.gif";
	var ffn = new Image();
	ffn.src = "img/contact1.gif";
	
}

function act(imgName) {
	if (document.images) 
	document[imgName].src = eval(imgName + 'a.src');
}
function inact(imgName) {
	if (document.images)
	document[imgName].src = eval(imgName + 'n.src');
}