(function(undefined) {
$.fn.accordion = function( parameters){
	
	var width = 800;
	var height = 800;
	var barSize = 60;
	var cover = false;
	var coverAlpha = 0.7;
	var shadow = false;
	var shadowAlpha = 1;
	var border = true;
	var borderSize = 1;
	var borderColor = "#ffffff";
	var transitionTime = 300;
	var autoplay = false;
	var autoplayTime = 3000;
	var changeType = "over";
	var buttons = false;
	var previousBtn = undefined;
	var nextBtn = undefined;
	
	//PARSE PARAMETERS
	if ( parameters.width != undefined )
		width = parameters.width;
	if ( parameters.height != undefined ) 
		height = parameters.height;
	if ( parameters.barSize != undefined )
		barSize = parameters.barSize;
	if ( parameters.cover != undefined )
		cover = parameters.cover;
	if ( parameters.coverAlpha != undefined )
		coverAlpha = parameters.coverAlpha;
	if ( parameters.shadow != undefined )
		shadow = parameters.shadow;
	if ( parameters.shadowAlpha != undefined )
		shadowAlpha = parameters.shadowAlpha;
	if ( parameters.border != undefined )
		border = parameters.border;
	if ( parameters.borderSize != undefined )
		borderSize = parameters.borderSize;
	if ( parameters.borderColor != undefined )
		borderColor = parameters.borderColor;
	if ( parameters.transitionTime != undefined ){
		transitionTime = parameters.transitionTime;
		transitionTime*=1000;
	}
	if ( parameters.autoplay != undefined )
		autoplay = parameters.autoplay;
	if ( parameters.autoplayTime != undefined ){
		autoplayTime = parameters.autoplayTime;
		autoplayTime*=1000;
	}
	if ( parameters.changeType != undefined )
		changeType = parameters.changeType;
	if ( parameters.previousBtn != undefined && parameters.nextBtn != undefined){
		buttons = true;
		previousBtn = parameters.previousBtn;
		nextBtn = parameters.nextBtn;
	}
	
	var $root = $(this);
	var $blocks = $(".block", this);
	
	var numBlocks = $blocks.size();
	
	var size = width - barSize*(numBlocks-1);
	var currentOpened = 0;
	var clickTypeTimeOut;
	
	$(".holder", $root).css("width", width*2+"px");
	
	$blocks.css("width", width*2+"px");
	$blocks.css("height", height+"px");
	
	$root.css("width", width);
	$root.css("height", height+borderSize*2);
	
	$(".holder .content", $root).css("opacity", 0);
	
	if(border){
		$blocks.css("border", "solid");
		$blocks.css("border-width", borderSize+"px");
		$blocks.css("border-color", borderColor);
		
		$root.css("border-right", "solid");
		$root.css("border-right-width", borderSize+"px");
		$root.css("border-right-color", borderColor);
	}
	
	var i= 0;
	$blocks.each(function(){
		var $currentBlock = $(this);
		$currentBlock.css("left", (i*(width/numBlocks))+"px");	
		$currentBlock.attr("rel", i);
		i++;
		$currentBlock.append('<div class="loading"><img src="images/ui/ajax-loader.gif"/></div>');
	});
	
	//OVER A BLOCK
	var overBlock = function(num){
		
		var $thisBlock = $($blocks[num]);
		
		if(!$thisBlock.hasClass("locked")){
			currentOpened = num;
			
			$thisBlock.addClass("locked");
			
			$thisBlock.stop().animate({
			   left: barSize*num
			}, transitionTime );
			
			
			$(".content_holder", $thisBlock).stop().animate({
				left: (-$thisBlock.width()/2+size/2)	
			}, transitionTime );
			
			if(shadow)
				$(".shadow", $thisBlock).stop().animate({
				   width: size
				}, transitionTime );
			
			var left=true;
			for(var i=0; i<numBlocks; i++){
				var $block = $($blocks[i]);
				
				if(i==num){
					left=false;
					if(cover)
						$(".content_holder .cover", $block).stop().fadeTo(transitionTime, 0);	
				}
				else{
					if(left){
						$block.stop().animate({
						   left: barSize*i
						}, transitionTime );
					}
					else{
						$block.stop().animate({
						   left: width-barSize*(numBlocks-i)
						}, transitionTime );
					}
					$(".content_holder", $block).stop().animate({
						left: (-$(".content_holder", $block).width()/2+barSize/2)	
					}, transitionTime );
					
					if(cover)
						$(".content_holder .cover", $block).stop().fadeTo(transitionTime, coverAlpha);
						
					if(shadow)
						$(".shadow", $block).stop().animate({
						   width: barSize
						}, transitionTime );
				}
			}
			
			$(".content", $thisBlock).each(function(){
				var $this = $(this);
				
				$this.clearQueue();
				var type = $this.attr("transitionType");
				var alignV = "top";
				var alignH = "left";
				var delay = 0;
				var distance = 30;
				var transitionTimeContent = 500;
				var left = 0;
				var top = 0;
				
				//READ ATTRIBUTES
				if($this.attr("alignV") !=  undefined)
					alignV = $this.attr("alignV");
					
				if($this.attr("alignH") != undefined)
					alignH = $this.attr("alignH");
				
				if($this.attr("delay") != undefined)
				   delay = parseFloat($this.attr("delay"), 10)*1000;
				   
				if($this.attr("distance") != undefined)
				   distance = parseInt($this.attr("distance"), 10);
				   
				if($this.attr("transitionTime") != undefined)
				   transitionTimeContent =  parseFloat($this.attr("transitionTime"), 10)*1000;
				   
				if($this.attr("x") != undefined)
				   left =  parseInt($this.attr("x"), 10);
				 
				if($this.attr("y") != undefined)
				   top =  parseInt($this.attr("y"), 10);
				
			
				if(alignV=="bottom"){
					top = height-$this.height()-top;
				}
				if(alignH=="right"){
					left = size-$this.width()-left;
				}
			
				$this.css("left", left+'px');
				$this.css("top", top+'px');
				
				
				if(type=="left")
					$this.css("left", (left-distance)+'px');
				else if(type=="right")
					$this.css("left", (left+distance)+'px');
				else if(type=="top")
					$this.css("top", (top-distance)+'px');
				else if(type=="bottom")
					$this.css("top", (top+distance)+'px');
						
					
				$this.stop().delay(transitionTime+delay).animate({
					left: left,
					top: top,
					opacity: 1
				}, transitionTimeContent );
			});
			
			if(changeType=="click"){
				clearTimeout(clickTypeTimeOut);
				clickTypeTimeOut = setTimeout(function(){ 
					outBlock(currentOpened);
					if(currentOpened<(numBlocks-1))
						currentOpened++;
					else
						currentOpened = 0;
					overBlock(currentOpened); }, autoplayTime);
			}
		}
	}
	
	
	var outBlockContent = function(num){
		var $thisBlock = $($blocks[num]);
		
		$(".content", $thisBlock).each(function(){
			var $this = $(this);
			
			$this.clearQueue();
			
			var type = $this.attr("transitionType");
			var alignV = "top";
			var alignH = "left";
			var distance = 30;
			var left = 0;
			var top = 0;
			var transitionTimeContent = 500;
			
			//READ ATTRIBUTES
			if($this.attr("alignV") !=  undefined)
				alignV = $this.attr("alignV");
				
			if($this.attr("alignH") != undefined)
				alignH = $this.attr("alignH");
			   
			if($this.attr("distance") != undefined)
			   distance = parseInt($this.attr("distance"), 10);
			   
			if($this.attr("transitionTime") != undefined)
			   transitionTimeContent =  parseFloat($this.attr("transitionTime"), 10)*1000;
			   
			if($this.attr("x") != undefined)
			   left =  parseInt($this.attr("x"), 10);
			 
			if($this.attr("y") != undefined)
			   top =  parseInt($this.attr("y"), 10);
		
			if(alignV=="bottom")
				top = height-$this.height()-top;
			if(alignH=="right")
				left = size-$this.width()-left;
			
			
			
			if(type=="left")
				left-=distance;
			else if(type=="right")
				left+=distance;
			else if(type=="top")
				top-=distance;
			else if(type=="bottom")
				top+=distance;
					
				
			$this.stop().animate({
				left: left,
				top: top,
				opacity: 0
			}, transitionTime );
		});
	}
	
	//OUT OF A BLOCK
	var outBlock = function(num){
		var $thisBlock = $($blocks[num]);
		
		$thisBlock.removeClass("locked");
		
		outBlockContent(num);
		
		for(var i=0; i<numBlocks; i++){
			var $block = $($blocks[i]);
		
			$block.stop().animate({
			   left: (i*(width/numBlocks))
			}, 300 );
			
			$(".content_holder", $block).stop().animate({
				left: (-$(".content_holder", $block).width()/2+(width/numBlocks)/2)
			}, 300 );
			
			if(cover)
				$(".content_holder .cover", $block).stop().fadeTo(transitionTime, 0);
			
			if(shadow)
				$(".shadow", $block).stop().animate({
				   width: (width/numBlocks)
				}, transitionTime );
		}
	}
	
	//INITIAL IMAGES LOAD
	var loadImage = function(num){
		var $block = $($blocks[num]);
		
		//create image
		var img = new Image();
		img.onload = function() {
			
			$(img).css("opacity" , 0);
			
			var maxWidth =  size;
			var maxHeight = height;
			
			var ratio = 1;
				
			if( img.width > maxWidth )
				ratio = img.width / maxWidth;
				
			if( ratio > (img.height/maxHeight))
				ratio = img.height / maxHeight;
				
			img.width /= ratio;				
			img.height /= ratio;
			
			var imgWidth = img.width;
			var imgHeight = img.height;
			
			$block.css("width", imgWidth+"px");
			
			$(".content_holder", $block).css("width", imgWidth+"px");
			$(".content_holder", $block).css("left", (-imgWidth/2+(width/numBlocks)/2)+"px");

			$(".content_holder .image", $block).append( img );
				
			$(".content", $block).css("padding-left", (imgWidth-size)/2+"px");
			$(".content", $block).css("padding-right", (imgWidth-size)/2+"px");
				
			if(cover){
				var $cover = $(".content_holder .cover", $block);
				
				$(".content_holder", $block).append( '<div class="cover"></div>' );
				
				$cover.css("width", imgWidth+"px");
				$cover.css("height", imgHeight+"px");
				$cover.css("opacity", 0);
			}
			
			if(shadow && num<numBlocks){
				var $shadow = $(".shadow", $block);
				
				$block.append( '<div class="shadow"></div>' );
				
				$shadow.css("width", (width/numBlocks)+"px");
				$shadow.css("height", imgHeight+"px");
				$shadow.css("opacity", shadowAlpha);
			}
			
			if(changeType=="click"){
				$block.click(	function(){
									    if(currentOpened != parseInt($(this).attr("rel"), 10))
									    		outBlock(currentOpened);
										overBlock(parseInt($(this).attr("rel"), 10));});
				$block.css("cursor", "pointer");
			}
			else
				$block.hover(	function(){ if(currentOpened != parseInt($(this).attr("rel")))
									    		outBlock(currentOpened);
										overBlock(parseInt($(this).attr("rel"), 10));}, 
								function(){outBlock(parseInt($(this).attr("rel"), 10));});
				
				
			$( img ).fadeTo( 500 , 1);
			
			num++;
			if(num < numBlocks){
				loadImage(num);
			}
			else{
				clickTypeTimeOut = setTimeout(function(){ 
					overBlock(currentOpened); }, autoplayTime);
			}
			
		}
			
		img.src = $(".content_holder", $block).attr("src");
	}
	loadImage(0);
	
	if(buttons){
		previousBtn.click(function(){
				outBlock(currentOpened);
				if(currentOpened>0)
					currentOpened--;
				else
					currentOpened = numBlocks-1;
				overBlock(currentOpened); 			  
							  });
		nextBtn.click(function(){
				outBlock(currentOpened);
				if(currentOpened<(numBlocks-1))
					currentOpened++;
				else
					currentOpened = 0;
				overBlock(currentOpened); 
							  });
	}
	
};
}());