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/*
* Easy Slider 1.5 - jQuery plugin
* written by Alen Grakalic
* http://cssglobe.com/post/4004/easy-slid ... or-sliding
*
* Copyright (c) 2009 Alen Grakalic (http://cssglobe.com)
* Dual licensed under the MIT (MIT-LICENSE.txt)
* and GPL (GPL-LICENSE.txt) licenses.
*
* Built for jQuery library
* http://jquery.com
*
*/

/*
* markup example for $("#slider").easySlider();
*
* <div id="slider">
* <ul>
* <li><img src="images/01.jpg" alt="" /></li>
* <li><img src="images/02.jpg" alt="" /></li>
* <li><img src="images/03.jpg" alt="" /></li>
* <li><img src="images/04.jpg" alt="" /></li>
* <li><img src="images/05.jpg" alt="" /></li>
* </ul>
* </div>
*
*/

(function($) {

$.fn.easySlider = function(options){

// default configuration properties
var defaults = {
prevId: 'prevBtn',
prevText: 'Previous',
nextId: 'nextBtn',
nextText: 'Next',
controlsShow: false,
controlsBefore: '',
controlsAfter: '',
controlsFade: true,
firstId: 'firstBtn',
firstText: 'First',
firstShow: false,
lastId: 'lastBtn',
lastText: 'Last',
lastShow: false,
vertical: false, // to make the slides scroll vertically change this to true
speed: 800, // to make the scoll transition faster decrease this number
auto: true,
pause: 3000, // to make each slide visible for a longer duration increase this number
continuous: true // to end at the last slide change this to false
};

var options = $.extend(defaults, options);

this.each(function() {
var obj = $(this);
var s = $("li", obj).length;
var w = $("li", obj).width();
var h = $("li", obj).height();
obj.width(w);
obj.height(h);
obj.css("overflow","hidden");
var ts = s-1;
var t = 0;
$("ul", obj).css('width',s*w);
if(!options.vertical) $("li", obj).css('float','left');

if(options.controlsShow){
var html = options.controlsBefore;
if(options.firstShow) html += '<span id="'+ options.firstId +'"><a href=\"javascript:void(0);\">'+ options.firstText +'</a></span>';
html += ' <span id="'+ options.prevId +'"><a href=\"javascript:void(0);\">'+ options.prevText +'</a></span>';
html += ' <span id="'+ options.nextId +'"><a href=\"javascript:void(0);\">'+ options.nextText +'</a></span>';
if(options.lastShow) html += ' <span id="'+ options.lastId +'"><a href=\"javascript:void(0);\">'+ options.lastText +'</a></span>';
html += options.controlsAfter;
$(obj).after(html);
};

$("a","#"+options.nextId).click(function(){
animate("next",true);
});
$("a","#"+options.prevId).click(function(){
animate("prev",true);
});
$("a","#"+options.firstId).click(function(){
animate("first",true);
});
$("a","#"+options.lastId).click(function(){
animate("last",true);
});

function animate(dir,clicked){
var ot = t;
switch(dir){
case "next":
t = (ot>=ts) ? (options.continuous ? 0 : ts) : t+1;
break;
case "prev":
t = (t<=0) ? (options.continuous ? ts : 0) : t-1;
break;
case "first":
t = 0;
break;
case "last":
t = ts;
break;
default:
break;
};

var diff = Math.abs(ot-t);
var speed = diff*options.speed;
if(!options.vertical) {
p = (t*w*-1);
$("ul",obj).animate(
{ marginLeft: p },
speed
);
} else {
p = (t*h*-1);
$("ul",obj).animate(
{ marginTop: p },
speed
);
};

if(!options.continuous && options.controlsFade){
if(t==ts){
$("a","#"+options.nextId).hide();
$("a","#"+options.lastId).hide();
} else {
$("a","#"+options.nextId).show();
$("a","#"+options.lastId).show();
};
if(t==0){
$("a","#"+options.prevId).hide();
$("a","#"+options.firstId).hide();
} else {
$("a","#"+options.prevId).show();
$("a","#"+options.firstId).show();
};
};

if(clicked) clearTimeout(timeout);
if(options.auto && dir=="next" && !clicked){;
timeout = setTimeout(function(){
animate("next",false);
},diff*options.speed+options.pause);
};

};
// init
var timeout;
if(options.auto){;
timeout = setTimeout(function(){
animate("next",false);
},options.pause);
};

if(!options.continuous && options.controlsFade){
$("a","#"+options.prevId).hide();
$("a","#"+options.firstId).hide();
};

});

};

})(jQuery);