function switchIMG(target,filename) { 
	target.src = 'images/mainpage_' + filename + '.png';
}


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');
	
		// uncomment the 3 lines below to pull the images in random order
		
		// var $sibs  = $active.siblings();
		// var rndNum = Math.floor(Math.random() * $sibs.length );
		// var $next  = $( $sibs[ rndNum ] );
	
	
		$active.addClass('last-active');
	
		$next.css({opacity: 0.0})
			.addClass('active')
			.animate({opacity: 1.0}, 3000, function() {
				$active.removeClass('active last-active');
			});
	}
	
	$(function() {
		setInterval( "slideSwitch()", 5000 );
	});