var myImageArray = new Array("bilen.jpg","lyset.jpg","penge.jpg","spurvene.jpg","vandet.jpg");

var preloaded = new Array();
function preload_images() {
    for (var i = 0; i < arguments.length; i++){
        preloaded[i] = document.createElement('img');
        preloaded[i].setAttribute('src',arguments[i]);
    }
}

function getImageFile() {
	
	var randomnumber = Math.floor(Math.random()*5);
	
	return myImageArray[randomnumber];
}

function rotateImage() {
	 var myImage = getImageFile();
	 myImageSrc = document.getElementById("topLogo");
	 myImageSrc.src = "/files/designimages/"+myImage;
	 setTimeout("rotateImage()",15000); 
}

preload_images("bilen.jpg","lyset.jpg","penge.jpg","spurvene.jpg","vandet.jpg");