function newImage(arg) {
        if (document.images) {
                rslt = new Image();
                rslt.src = arg;
                return rslt;
        }
}

function changeImages() {
        if (document.images && (preloadFlag == true)) {
                for (var i=0; i<changeImages.arguments.length; i+=2) {
                        document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
                }
        }
}

var preloadFlag = false;
function preloadImages() {
        if (document.images) {
                button_event_over = newImage("/images/menu/left/button-event-over.gif");
                button_news_over = newImage("/images/menu/left/button-news-over.gif");
                button_merch_over = newImage("/images/menu/left/button-merch-over.gif");
                button_photo_over = newImage("/images/menu/left/button-photo-over.gif");
                button_music_over = newImage("/images/menu/left/button-music-over.gif");
                button_media_over = newImage("/images/menu/left/button-media-over.gif");
                button_biography_over = newImage("/images/menu/left/button-biography-over.gif");
                button_contact_over = newImage("/images/menu/left/button-contact-over.gif");
                preloadFlag = true;
        }
}

// keep track of which image is "selected" and turn it
// off before "selecting" the next one
selected_list_item_id = '';
selected_list_item_off_src = '';

function list_select(item, image_src)
{
	if (document.images)
	{
		if ('' != selected_list_item_id)
		{
			document[selected_list_item_id].src = selected_list_item_off_src;
		}

		selected_list_item_off_src = document[item].src;
		selected_list_item_id = item;
		document[item].src = image_src;
	}
}