function doPreload(){
		if (document.images){
		var the_images = new Array('/sa/images/index_header_roll1_off.gif','/sa/images/index_header_roll1_on.gif','/sa/images/index_header_roll2_off.gif','/sa/images/index_header_roll2_on.gif','/sa/images/index_header_roll3_off.gif','/sa/images/index_header_roll3_on.gif','/sa/images/index_header_roll4_off.gif','/sa/images/index_header_roll4_on.gif','/sa/images/index_header_roll5_off.gif','/sa/images/index_header_roll5_on.gif','/sa/images/index_header_roll6_off.gif','/sa/images/index_header_roll6_on.gif','/sa/images/header_roll1_off.gif','/sa/images/header_roll1_on.gif','/sa/images/header_roll2_off.gif','/sa/images/header_roll2_on.gif','/sa/images/header_roll3_off.gif','/sa/images/header_roll3_on.gif','/sa/images/header_roll4_off.gif','/sa/images/header_roll4_on.gif','/sa/images/header_roll5_off.gif','/sa/images/header_roll5_on.gif','/sa/images/header_roll6_off.gif','/sa/images/header_roll6_on.gif');
		preloadImages(the_images);
        }
	}

	function preloadImages(the_images_array) {
		for(loop = 0; loop < the_images_array.length; loop++){
		var an_image = new Image();
		an_image.src = the_images_array[loop];
        }
	}
	
	function chngIt(img,newImg) {
		if (document.images) {
			document.images[img].src = newImg;
			}
		}