function slideSwitch($fadeDelay) {
	// vased on http://jonraasch.com/blog/a-simple-jquery-slideshow, thx!
	var $sibs;
	var $rndNum;
	var $divactive;
	var $active;
	var $next;
	var $divnext;
	
	$divactive = $('#pictures div.divactive');
	if ( $divactive.length == 0 ) {
		$sibs  = $('#pictures div');
		rndNum = Math.floor(Math.random() * $sibs.length );
		$divactive  = $( $sibs[ rndNum ] );
	}
	$active = $divactive.find('img.active');
	if ( $active.length == 0 ) 
		$active = $divactive.find('img:last');

	$sibs  = $divactive.siblings();
	rndNum = Math.floor(Math.random() * $sibs.length );
	$divnext  = $( $sibs[ rndNum ] );
	
	$sibs  = $active.siblings();
	rndNum = Math.floor(Math.random() * $sibs.length );
	$next  = $( $sibs[ rndNum ] );
	
	$active.addClass('last-active');

	$next.css({'opacity': '0.0', 'display': 'inherit'})
			.addClass('active')
			.animate({opacity: 1.0}, $fadeDelay, function() {
					$active.removeClass('active last-active');
					$divactive.removeClass('divactive');
					$divnext.addClass('divactive');
			});
}