if(document.images !=null){preload()}



function preload() {

	nav01 = new Image();

	nav01.src = "images/nav_about.gif";

	nav02 = new Image();

	nav02.src = "images/nav_stories.gif";

	nav03 = new Image();

	nav03.src = "images/nav_news.gif";

	nav04 = new Image();

	nav04.src = "images/nav_friends.gif";

	nav05 = new Image();

	nav05.src = "images/nav_help.gif";

    nav06 = new Image();

	nav06.src = "images/nav_contact.gif";
	
	
	nav01on = new Image();

	nav01on.src = "images/nav_about_on.gif";

	nav02on = new Image();

	nav02on.src = "images/nav_stories_on.gif";

	nav03on = new Image();

	nav03on.src = "images/nav_news_on.gif";

	nav04on = new Image();

	nav04on.src = "images/nav_friends_on.gif";

	nav05on = new Image();

	nav05on.src = "images/nav_help_on.gif";
	
	nav06on = new Image();

	nav06on.src = "images/nav_contact_on.gif";		
}



function switchImages(title, title_name){

	if(document.images != null){

		var titleOn = (title.length == 7);

		title = eval(title + ".src");

		document[title_name].src = title;

		title = title_name + "_arrow";

		

	}

}