function slideSwitch() {
    var $active = $('#slideshow IMG.active');
    if ( $active.length == 0 ) $active = $('#slideshow IMG:last');

    // use this to pull the images in the order they appear in the markup
    var $next =  $active.next().length ? $active.next()
        : $('#slideshow IMG:first');

    $active.addClass('last-active');

    $next.css({opacity: 0.0})
        .addClass('active')
        .animate({opacity: 1.0}, 1000, function() {
            $active.removeClass('active last-active');
        });
	}
	
	function mainmenu(){
		$(" #nav_menu ul ").css({display: "none"}); // Opera Fix
		$(" #nav_menu li").hover(function(){
				$(this).find('ul:first').css({visibility: "visible",display: "none"}).show(400);
				},function(){
			$(this).find('ul:first').css({visibility: "hidden"});
		});
		$("#nav_menu a").click(function(event){
			if($(this).attr("href") == '#')
				event.preventDefault();
		});
	}