Problema con slider

Buenas es que tengo un slider y es muy pequeño el lienzo osea no me muestra toda la imagen el slider consiste en pasar 5 imágenes deslizadas pero no logro hacer que se haga mas grande este es el slider

/*
 * Easy Slider 1.7 - jQuery plugin
 * written by Alen Grakalic 
 * http://cssglobe.com/post/4004/easy-slider-15-the-easiest-jquery-plugin-for-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: true,
 controlsBefore: '',
 controlsAfter: '', 
 controlsFade: true,
 firstId: 'firstBtn',
 firstText: 'First',
 firstShow: false,
 lastId: 'lastBtn', 
 lastText: 'Last',
 lastShow: false, 
 vertical: false,
 speed: 500,
 auto: false,
 pause: 3500,
 continuous: false, 
 numeric: false,
 numericId: 'controls'
 }; 
 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(); 
 var clickable = true;
 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.continuous){
 $("ul", obj).prepend($("ul li:last-child", obj).clone().css("margin-left","-"+ w +"px"));
 $("ul", obj).append($("ul li:nth-child(2)", obj).clone());
 $("ul", obj).css('width',(s+1)*w);
 }; 
 if(!options.vertical) $("li", obj).css('float','left');
 if(options.controlsShow){
 var html = options.controlsBefore; 
 if(options.numeric){
 html += '<ol id="'+ options.numericId +'"></ol>';
 } else {
 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); 
 };
 if(options.numeric){ 
 for(var i=0;i<s;i++){ 
 $(document.createElement("li"))
 .attr('id',options.numericId + (i+1))
 .html('<a rel='+ i +' href=\"javascript:void(0);\">'+ (i+1) +'</a>')
 .appendTo($("#"+ options.numericId))
 .click(function(){ 
 animate($("a",$(this)).attr('rel'),true);
 }); 
 }; 
 } else {
 $("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 setCurrent(i){
 i = parseInt(i)+1;
 $("li", "#" + options.numericId).removeClass("current");
 $("li#" + options.numericId + i).addClass("current");
 };
 function adjust(){
 if(t>ts) t=0; 
 if(t<0) t=ts; 
 if(!options.vertical) {
 $("ul",obj).css("margin-left",(t*w*-1));
 } else {
 $("ul",obj).css("margin-left",(t*h*-1));
 }
 clickable = true;
 if(options.numeric) setCurrent(t);
 };
 function animate(dir,clicked){
 if (clickable){
 clickable = false;
 var ot = t; 
 switch(dir){
 case "next":
 t = (ot>=ts) ? (options.continuous ? T+1 : ts) : t+1; 
 break; 
 case "prev":
 t = (t<=0) ? (options.continuous ? T-1 : 0) : t-1;
 break; 
 case "first":
 t = 0;
 break; 
 case "last":
 t = ts;
 break; 
 default:
 t = dir;
 break; 
 }; 
 var diff = Math.abs(ot-t);
 var speed = diff*options.speed; 
 if(!options.vertical) {
 p = (t*w*-1);
 $("ul",obj).animate(
 { marginLeft: p }, 
 { queue:false, duration:speed, complete:adjust }
 ); 
 } else {
 p = (t*h*-1);
 $("ul",obj).animate(
 { marginTop: p }, 
 { queue:false, duration:speed, complete:adjust }
 ); 
 };
 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.numeric) setCurrent(0);
 if(!options.continuous && options.controlsFade){ 
 $("a","#"+options.prevId).hide();
 $("a","#"+options.firstId).hide(); 
 }; 
 });
 };
})(jQuery);