// JavaScript Document

function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

function changeImages() {
	if (document.images && (preloadFlag == true)) {
		for (var i=0; i<changeImages.arguments.length; i+=2) {
			document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
		}
	}
}

var preloadFlag = false;
function preloadImages() {
	if (document.images) {
		Menu_Left_01_over = newImage("images/Menu_Left_01-over.jpg");
		Menu_Left_02_over = newImage("images/Menu_Left_02-over.jpg");
		Menu_Left_03_over = newImage("images/Menu_Left_03-over.jpg");
		Menu_Left_04_over = newImage("images/Menu_Left_04-over.jpg");
		preloadFlag = true;
	}
}
function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

function changeImages() {
	if (document.images && (preloadFlag == true)) {
		for (var i=0; i<changeImages.arguments.length; i+=2) {
			document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
		}
	}
}

var preloadFlag = false;
function preloadImages() {
	if (document.images) {
		texas_drag_racing_02_over = newImage("images/texas_drag_racing_02-over.png");
		texas_drag_racing_03_over = newImage("images/texas_drag_racing_03-over.png");
		texas_drag_racing_04_over = newImage("images/texas_drag_racing_04-over.png");
		texas_drag_racing_05_over = newImage("images/texas_drag_racing_05-over.png");
		texas_drag_racing_06_over = newImage("images/texas_drag_racing_06-over.png");
		texas_drag_racing_07_over = newImage("images/texas_drag_racing_07-over.png");
		preloadFlag = true;
	}
}
function getBackground(){
            
                var bgimg = new Array();
                bgimg[0] = "images/bg1.jpg";
                bgimg[1] = "images/bg2.jpg";
                bgimg[2] = "images/bg3.jpg";
				bgimg[3] = "images/bg4.jpg";
				bgimg[4] = "images/bg5.jpg";
                
                var random = Math.floor(Math.random() * bgimg.length);
                var imgurl = bgimg[random];
                document.body.style.backgroundImage = 'url(' + imgurl + ')';
            }