// JavaScript Document

var upImgs, overImgs;
var initialised = false;
function preloadImages() {
	var imgNames = new Array('menu_about', 'menu_links', 'menu_contact', 'menu_media', 'menu_trade', 'menu_home', 'rail_btn1', 'rail_btn2', 'rail_btn3', 'login_btn1', 'login_btn2');
	overImgs = new Array();
	upImgs = new Array();
	for (o in imgNames) {
		im = imgNames[o];
		upImgs[im] = new Image();
		upImgs[im].src = pathStr + "images/" + im + ".gif";
		overImgs[im] = new Image();
		overImgs[im].src = pathStr + "images/" + im + "_o.gif";
	}
	initialised = true;
}

function swapImg(imgName, swapTo) {
	if (initialised) {
		if (document.images) {
			document[imgName].src = eval(swapTo + "Imgs[imgName].src");
		}
	}
}