// JavaScript Document
function ChangeCSSBgImg() {
	if (!document.getElementById) return false;
	
	var MyElement = "sidemenu" //The ID of the element you want to change
	var ImgPath = "http://stationstreetcafe.com.au/banner_spics/" //The file path to your images
	
	if (!document.getElementById(MyElement)) return false;
	
	var random_images = new Array ();
	random_images[0] = "ss_01.jpg";
	random_images[1] = "ss_02.jpg";
	random_images[2] = "ss_03.jpg";
	random_images[3] = "ss_04.jpg";
	random_images[4] = "ss_05.jpg";
	random_images[5] = "ss_06.jpg";
	random_images[6] = "ss_07.jpg";
	random_images[7] = "ss_08.jpg";
	random_images[8] = "ss_09.jpg";
	random_images[9] = "ss_10.jpg";
	random_images[10] = "ss_11.jpg";
	random_images[11] = "ss_12.jpg";
	random_images[12] = "ss_13.jpg";
	random_images[13] = "ss_14.jpg";
	random_images[14] = "ss_15.jpg";
	random_images[15] = "ss_16.jpg";
	random_images[16] = "ss_17.jpg";
	random_images[17] = "ss_18.jpg";
	random_images[18] = "ss_19.jpg";
	random_images[19] = "ss_20.jpg"
	random_images[20] = "ss_21.jpg"
	random_images[21] = "ss_22.jpg";
	random_images[22] = "ss_23.jpg";
	random_images[23] = "ss_24.jpg";
	random_images[24] = "ss_25.jpg";
	random_images[25] = "ss_26.jpg";
	random_images[26] = "ss_27.jpg";
	random_images[27] = "ss_28.jpg";
	random_images[28] = "ss_29.jpg";
	random_images[29] = "ss_30.jpg"
	random_images[30] = "ss_31.jpg"
	random_images[31] = "ss_32.jpg";
	random_images[32] = "ss_33.jpg";
	random_images[33] = "ss_34.jpg";
	random_images[34] = "ss_35.jpg";
	random_images[35] = "ss_36.jpg";

	
	var $header = document.getElementById(MyElement);
	var $backgroundurl = $header.style.backgroundImage;
	var ImgURL = "url(" + ImgPath + random_images[rand(random_images.length)] + ")";
	
	if ($backgroundurl != ImgURL) {
		$header.style.backgroundImage = ImgURL;
	}
	
	movement = setTimeout("ChangeCSSBgImg()",5000);
}

/* random number generator */
function rand(n) {
    return ( Math.floor ( Math.random ( ) * n ) );
}

/* Custom onload function */

function addLoadEvent(func) {
    var oldonload = window.onload;
	if (typeof window.onload != 'function') {
		window.onload = func;
	} else {
		window.onload = function() {
    		oldonload();
			func();
		}
	}
}

/* trigger onload */

addLoadEvent(ChangeCSSBgImg);