/*
 * 	Easy Slider 1.5 - 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
 *
 */
 
(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: 			1000,
			auto:			false,
			pause:			5000,
			continuous:		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 dfltMenu;
				dfltMenu = '<ol style="list-style-type: none;float:right; width:117px; height:148px;">';
				for (var k=1; k<=3; k++){
					var dfmtxt = document.getElementById("special" + k).alt;
					var dfmsplink = document.getElementById("splink" + k).href;
					
					dfltMenu +='<li style="height:49px;">';
					if (k==1) {
						dfltMenu +='<img src="img/special/menu/sel_special1.gif" alt="'+dfmtxt+'" width="117" height="49" />';
					} else {
						dfltMenu +='<a href="'+dfmsplink+'" title="'+dfmtxt+'">';
						dfltMenu +='<img src="img/special/menu/special'+ k +'.gif" alt="'+dfmtxt+'" width="117" height="49" />';
						dfltMenu +='</a>';
					}
					dfltMenu +='</li>';
				}
				dfltMenu += '</ol>';
				document.getElementById("scrollClear").innerHTML = dfltMenu;
			};
			
			$("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
					);					
				};

					// MENU
					if(options.controlsShow){
						
						var nowimgID = p/w*(-1)+1;
						var dispCord;
						dispCord = '<ol style="list-style-type: none;float:right; width:117px; height:148px;">';
						
						var h;
						for(h=1; h<=3; h++) {
							var txt = document.getElementById("special" + h).alt;
							var splink = document.getElementById("splink" + h).href;
							dispCord += '<li style="height:49px;">';
							if (nowimgID==h) {
								dispCord += '<img src="img/special/menu/sel_special'+ h +'.gif" alt="'+txt+'" width="117" height="49" />';
							} else {
								dispCord += '<a href="'+ splink +'" title="'+txt +'">';
								dispCord += '<img src="img/special/menu/special'+ h +'.gif" alt="'+txt+'" width="117" height="49" />';
								dispCord += '</a>';
							}
							dispCord += '</li>';
						}
						dispCord += '</ol>';
						document.getElementById("scrollClear").innerHTML = dispCord;
					};

				
				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);