function showTab(tabid,pictureid){
	$('.on div').toggle();
	$('.on').removeClass('on');
	$(pictureid).toggleClass('on');
	$('.tabscontent').hide(1);
	$(pictureid+' div').toggle();
	$(tabid).show(700);
}

function hideAll(pictureid){
	$('.tabscontent').hide(1);
	$(pictureid+' div').toggle();
	$('.on').removeClass('on');
}

function slideSwitch(id) {
    var $active = $('#' +id+' IMG.active');
    if ( $active.length == 0 ) $active = $('#' +id+' IMG:last');
    // use this to pull the images in the order they appear in the markup
    var $next =  $active.next().length ? $active.next()
        : $('#' +id+' 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}, 1000, function() {
            $active.removeClass('active last-active');
        });
}
$(function() {
    setInterval( "slideSwitch('slideshow1')", 5000 );
});