var imgToReset;
var imgSource;

function preloadImages(img, resetImage)
{
	imgToReset = img;
	imgSource  = resetImage;
	
	preload('/images/home.gif', '/images/capabilities.gif', '/images/buzz.gif', '/images/cstudies.gif', '/images/contact.gif', '/images/home_background.gif');
}

function preload() {
  	if (!document.images) return;
  	var ar = new Array();
  	var arguments = preload.arguments;
  	for (var i = 0; i < arguments.length; i++) {
    		ar[i] = new Image();
    		ar[i].src = arguments[i];
	}
}

function change_image(image_name) {
	document.home.src = image_name;
}

function reset_image() {
	imgToRest.src = imgSource;
}