function render_buttons() {
    $('.btn').each(function() {
        var b = $(this);
        var tt = b.text() || b.val();
        if ($(this).is(':input')) {
            b = $('<a>').insertAfter(this).addClass(this.className).attr('id',this.id);
            $(b).click(function(){
                $(this).parents('form').submit();
            });
            $(this).remove();
        }
        b.text('').css({cursor:'pointer'}).append($('<span>').text(tt).append('</span>'));
    });
}

// Buttons
$(document).ready(function() {
    render_buttons();
});

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');
        });
}