/* Copyright (c) 2008 Kean Loong Tan http://www.gimiti.com/kltan
 * Licensed under the MIT (http://www.opensource.org/licenses/mit-license.php)
 * jFlow
 * Version: 1.0 (May 13, 2008)
 * Requires: jQuery 1.2+
 */
 
(function($) {
    	
  
    	
	$.fn.jFlow = function(options) {
	     
		var opts = $.extend({}, $.fn.jFlow.defaults, options);
		var cur = 0;
		var maxi = $(".jFlowControl").length;
		
		
		$(".previous").parent().attr('class', 'inactiveprevious');
		
		if(maxi==0){
      $(".next").parent().attr('class', 'inactivenext');
    }
		
		
		
		
		$(this).find(".jFlowControl").each(function(i){
			$(this).click(function(){
				$(".jFlowControl").removeClass("jFlowSelected");
				
        $(this).addClass("jFlowSelected");
				var dur = Math.abs(cur-i+1);
				$(opts.slides).animate({
					marginLeft: "-" + (i * $(opts.slides).find(":first-child").width() + "px")
				}, opts.duration);
				cur = i;
			});
		});	
		
		$(opts.slides).before('<div id="jFlowSlide"></div>').appendTo("#jFlowSlide");
		
		$(opts.slides).find("div").each(function(){
			$(this).before('<div class="jFlowSlideContainer"></div>').appendTo($(this).prev());
		});
		
		//initialize the controller
		$(".jFlowControl").eq(cur).addClass("jFlowSelected");
		
		var resize = function (x){
			$("#jFlowSlide").css({
				position:"relative",
				width: opts.width,
				height: opts.height,
				overflow: "hidden"
			});
		
			$(opts.slides).css({
				position:"relative",
				width: $("#jFlowSlide").width()*$(".jFlowControl").length+"px",
				height: $("#jFlowSlide").height()+"px",
				overflow: "hidden"
			});
		
			$(opts.slides).children().css({
				position:"relative",
				width: $("#jFlowSlide").width()+"px",
				height: $("#jFlowSlide").height()+"px",
				"float":"left"
			});
			
			$(opts.slides).css({
				marginLeft: "-" + (cur * $(opts.slides).find(":first-child").width() + "px")
			});
		}
		
		resize();
		
		$(window).resize(function(){
			resize();						  
		});
		
		$(".previous").click(function(){
			if (cur > 0){
				cur--;
				$(".next").parent().attr('class', '');
				
				if(cur == 0){
          	$(this).parent().attr('class', 'inactiveprevious');  
        }
				
			}else{
				cur = cur;
			
			}
			
			$(".jFlowControl").removeClass("jFlowSelected");
			$(opts.slides).animate({
				marginLeft: "-" + (cur * $(opts.slides).find(":first-child").width() + "px")
			}, opts.duration);
			$(".jFlowControl").eq(cur).addClass("jFlowSelected");
		});
		
		$(".next").click(function(){
		  
		
			if (cur < maxi - 1){
				cur++;
				
				$(".previous").parent().attr('class', '');
				
				if (cur == maxi - 1){
				 $(this).parent().attr('class', 'inactivenext');
				}
				
				
			}else{
				cur = cur;
			}	
				
			$(".jFlowControl").removeClass("jFlowSelected");
			$(opts.slides).animate({
				marginLeft: "-" + (cur * $(opts.slides).find(":first-child").width() + "px")
			}, opts.duration);
			$(".jFlowControl").eq(cur).addClass("jFlowSelected");
		});
	};
	
	$.fn.jFlow.defaults = {
		easing: "swing",
		duration: 400,
		width: "100%"
	};
	
})(jQuery);