/**
 *
 * Copyright (c) 2010 Pedro Fuentes ( http://pedrofuent.es )
 * Dual licensed under the MIT and GPL licenses:
 * http://www.opensource.org/licenses/mit-license.php
 * http://www.gnu.org/licenses/gpl.html
 *
 **/
 
jQuery.fn.simpleSlide = function(a){
 
    a               = a || {};
    a.duration      = a.duration || 2700;
    a.transition    = a.transition || 1500;
    a.stopAt        = a.stopAt || false;
    a.element       = a.element || "img";
 
    var c   = $(this);
 
    $(c).css("position","relative");
 
    $(a.element,$(c))
        .css({
            'position'  : 'absolute',
            'top'       : '0px',
            'left'      : '0px',
            'z-index'   : '8'
            })
        .find(":first")
            .addClass("slide-active")
            .css('z-index','10');
 
    var cnt         = 0;
 
    var interval    = setInterval(function(){
 
            if(!isNaN(a.stopAt)){
                cnt++;
                if(cnt==a.stopAt){
                    clearTimeout(interval);
                }
            }
 
            var $active = $(a.element+".slide-active",$(c));
 
            if($active.length == 0) $active = $(a.element+":last",$(c));
 
            var $next   = $active.next().length ? $active.next() : $(a.element+":first",$(c));
 
            $active
                .addClass("slide-last-active")
                .css('z-index','9');
 
            $next
                .css({opacity: 0.0})
                .addClass("slide-active")
                .css('z-index','10')
                .animate({opacity: 1.0}, a.transition, function(){
                    $active
                        .removeClass('slide-active slide-last-active')
                        .css('z-index','8');
                });
        }, a.duration);
 
}