var Carroussel =
{
	stepWidth			: new Array(), //o quanto ele tem que andar em pixels
	windowSize			: new Array(), //quantos itens aparecem na janela
	arTotalItens		: new Array(),
	arPos				: new Array(),
	arIndiceIdentifier	: new Array(),
	leftBind			: new Array(),
	rightBind			: new Array(),
	_init	: function( uniqueIdentifier, wSize, steW )
	{
		if( steW == undefined ) steW = 220;
		if( wSize== undefined ) wSize= 4;
		
		var ttItens	= jQuery(uniqueIdentifier).find('.panel').length;
		
		Carroussel.arTotalItens.push( ttItens );
		Carroussel.arIndiceIdentifier.push(uniqueIdentifier);
		Carroussel.windowSize.push( wSize );
		Carroussel.stepWidth.push ( steW );
		Carroussel.arPos.push(0);
		
		if( ttItens > 4 )
		{
			
			jQuery(uniqueIdentifier).find('.nav-esq').get(0).masterIndex = Carroussel.arIndiceIdentifier.length-1;
			jQuery(uniqueIdentifier).find('.nav-dir').get(0).masterIndex = Carroussel.arIndiceIdentifier.length-1;
			
			jQuery(uniqueIdentifier).find('.nav-esq').css('display','block');
			jQuery(uniqueIdentifier).find('.nav-dir').css('display','block');
			
			jQuery(uniqueIdentifier).find('.nav-dir').unbind('click', Carroussel.left);
			jQuery(uniqueIdentifier).find('.nav-esq').unbind('click', Carroussel.right);
			
			jQuery(uniqueIdentifier).find('.nav-dir').bind('click', Carroussel.left);
			
			Carroussel.leftBind[ Carroussel.arIndiceIdentifier.length-1 ]	= true;
			Carroussel.rightBind[ Carroussel.arIndiceIdentifier.length-1 ]	= false;
			
			Carroussel.fadeOut( jQuery(uniqueIdentifier).find('.nav-esq') );
			Carroussel.fadeIn ( jQuery(uniqueIdentifier).find('.nav-dir') );
			
			jQuery( uniqueIdentifier ).find('.belt').css({
				width	: ((Carroussel.stepWidth[Carroussel.arIndiceIdentifier.length-1] * ttItens + 20) + 'px')
			});
		}
		else
		{
			jQuery( jQuery(uniqueIdentifier).find('.nav-dir') ).hide();
			jQuery( jQuery(uniqueIdentifier).find('.nav-esq') ).hide();
		}
		
		jQuery( uniqueIdentifier ).find('.belt').css('left','0px');
	},
	left	: function( ev )
	{
		var currentIdentifier	= Carroussel.arIndiceIdentifier[ev.target.masterIndex];
		var currentIndex		= ev.target.masterIndex;
		
		Carroussel.arPos[currentIndex] = Carroussel.arPos[currentIndex]+1;
		
		//animate
		jQuery(jQuery( currentIdentifier ).find('.belt')).animate({
			"left"	: (-Carroussel.arPos[currentIndex] * Carroussel.stepWidth[currentIndex]) + "px"
		}, { duration : 300 });
		
		//calculate
		if(Carroussel.arPos[currentIndex] == (Carroussel.arTotalItens[currentIndex] - Carroussel.windowSize[currentIndex]))
		{
			Carroussel.leftBind[currentIndex] = false;
			jQuery( currentIdentifier ).find('.nav-dir').unbind('click',Carroussel.left);
			Carroussel.fadeOut(jQuery( currentIdentifier ).find('.nav-dir'));
		}
		
		if( !Carroussel.rightBind[currentIndex] )
		{
			Carroussel.rightBind[currentIndex] = true;
			jQuery(jQuery( currentIdentifier ).find('.nav-esq')).bind('click',Carroussel.right);
		}
		Carroussel.fadeIn(jQuery( currentIdentifier ).find('.nav-esq'));
	},
	right	: function( ev )
	{
		var currentIdentifier	= Carroussel.arIndiceIdentifier[ev.target.masterIndex];
		var currentIndex		= ev.target.masterIndex;
		
		if(Carroussel.arPos[currentIndex] > 0)
		{
			Carroussel.arPos[currentIndex] = Carroussel.arPos[currentIndex] - 1;
			
			//animate
			jQuery( currentIdentifier ).find('.belt').animate({
				"left"	: (-Carroussel.arPos[currentIndex] * Carroussel.stepWidth[currentIndex]) + "px"
			}, { duration : 300 });
			
			//calculate
			if( Carroussel.arPos[currentIndex] == 0 )
			{
				Carroussel.rightBind = false;
				jQuery( currentIdentifier ).find('.nav-esq').unbind('click', Carroussel.right);
				Carroussel.fadeOut(jQuery( currentIdentifier ).find('.nav-esq'));
			}
			
			if(!Carroussel.leftBind[currentIndex])
			{
				Carroussel.leftBind[currentIndex] = true;
				jQuery(jQuery( currentIdentifier ).find('.nav-dir')).bind('click',Carroussel.left);
				Carroussel.fadeIn(jQuery( currentIdentifier ).find('.nav-dir'));
			}
		}
	},
	fadeIn	: function( obj )
	{
		jQuery(obj).css('opacity','1');
		jQuery(obj).css('filter','alpha(opacity=100)');
	},
	fadeOut	: function( obj )
	{
		jQuery(obj).css('opacity','0');
		jQuery(obj).css('filter','alpha(opacity=0)');
	}
}