// function to preload images
jQuery.preloadImages = function()
{
	for(var i = 0; i<arguments[0].length; i++)
	{
		jQuery("<img>").attr("src", arguments[0][i]);
	}
}

imagesArray = new Array
(
	"/images/content_bg.jpg", 
	"/images/content_bg2.jpg",
	"/images/content_bg3.jpg",
	"/images/content_bg4.jpg",
	"/images/content_bg5.jpg",
	"/images/content_bg6.jpg",
	"/images/content_bg8.jpg",
	"/images/content_bg9.jpg"
);
		
// preload images first (can run before page is fully loaded)
$.preloadImages(imagesArray);

$(document).ready(
	function()
	{
		// Display random image on homepage.				
		var randNum = Math.floor(Math.random() * imagesArray.length);
		
		$("body#home #content_wrapper").css("background-image", "url("+imagesArray[randNum]+")");
	}
);