/**
 * Simple Carousel
 * Copyright (c) 2010 Tobias Zeising, http://www.aditu.de
 * Licensed under the MIT license
 * Version 0.1
 */
(function($){
$.fn.simplecarousel = function( params ) {
    // set config
    var defaults = {
        width: 700,
        height: 500,
        next: false,
        prev: false,
        vertical: false,
        auto: false,
        current: 0,
        items: 0,
        slidespeed: 600,
        visible: 1
    };
    var config = $.extend(defaults, params);
    
    // configure carousel ul and li
    var ul = $(this);
    var li = ul.children('li');
    
    config.items = li.length;
    
    var height = config.height;
    var width = config.width;
    if(config.visible>1) {
        if(config.vertical)
            height = height*config.visible;
        else
            width = width*config.visible;
    }
    ul.wrap('<div class="carousel-frame" style="width:'+width+'px;height:'+height+'px;overflow:hidden">');
    if(!config.vertical) {
        ul.width(config.items*config.width);
        ul.height(config.height);
    } else {
        ul.width(config.width);
        ul.height(config.items*config.height);
    }
    ul.css('overflow','hidden');
    
    li.each(function(i,item) {
        $(item).width(config.width);
        $(item).height(config.height);
        if(!config.vertical)
            $(item).css('float','left');
    });
    
    // function for slide the carousel
    var slide = function(dir, click) {
        if(typeof click == "undefined" & config.auto==false)
            return;
    
        if(dir=="next") {
            if(config.current==config.items-1)
                config.current = 0;
            else
                config.current++;
        } else {
            if(config.current==0)
                config.current = config.items-1;
            else
                config.current--;
        }
        
        if(!config.vertical)
            ul.animate( {marginLeft: -1.0*config.current*config.width}, config.slidespeed );
        else
            ul.animate( {marginTop: -1.0*config.current*config.height}, config.slidespeed );
        
        if(typeof click != "undefined")
            config.auto = false;
        
        if(config.auto!=false)
            setTimeout(function() {
                slide('next');
            }, config.auto);
    }
    
    // set event handler for next and prev
    if(config.next!=false)
        config.next.click(function() {
            slide('next',true);
        });
        
        
    if(config.prev!=false)
        config.prev.click(function() {
            slide('prev',true);
        });
    
    // start auto sliding
    if(config.auto!=false)
        setTimeout(function() {
            slide('next');
        }, config.auto);
}
})(jQuery);