//////////////////
// ScrollPages //
////////////////
$.extend({
	scrollPages: {
		defaults: {
			elementSize: 50,
			elements: 3,
			speed: "slow",
			direction: "up"
		}
	}
});
$.fn.extend({
	scrollPages: function(options){
		options = $.extend({}, $.scrollPages.defaults, options);
		return this.each(function(){
			
			// Definies de variveis
			var total = $(".scrollMask li",this).length;
			var mask = options.elementSize * options.elements;
			var area = options.elementSize * total;
			var animation = false;
			var obj = this;
			var dimension = options.direction == "left" ? "width" : "height";
			var side = new Array();
			side[0] = options.direction;
			side[1] = options.direction == "up" ? "down" : "right";
			
			$(".scrollButtom",this).css("visibility","visible");
			if(options.elements >= total){
				$(".scrollButtom",this).css("visibility","visible");
				mask = area;
			}else{
				$(".scrollButtom[rel*='"+options.direction+"']",obj).css("visibility","hidden");
			}
			
			// Aplicao de estilos
			$(".scrollMask",this).css({"width": mask + "px", overflow: "hidden"}); // Mscara
			$(".scrollMask ul",this).css({"width": area + "px", marginTop: 0}); // UL
			$(".scrollMask li",this).css({"width": options.elementSize + "px", display: "block"}); // LI

			// Funo que execulta a rolagem
			var rolagem = function(direction){

				// Variveis
				var margem = -parseInt($(".scrollMask ul",obj).css("margin-"+(options.direction == "up" ? "top" : "left")));

				var intervalo = direction == side[1]
					? ( margem + ( mask * 2 ) ) < area
						? mask
						: area - (margem + mask)
					: ( margem - mask ) < 0
						? margem
						: mask
				;
				direction = direction == side[1]
					? -margem - intervalo
					: -margem + intervalo
				;
				
				$(".scrollButtom",obj).css("visibility","visible");
				var rel = -direction == 0 ? side[0] : (-direction + mask) == area ? side[1] : null;
				if(rel != null) $(".scrollButtom[rel*='"+rel+"']",obj).css("visibility","hidden");
				
				// Animao
				animation = true;
				if(options.direction == "up"){
					$(".scrollMask ul",obj).animate({marginTop: direction + "px"},options.speed,function(){ animation = false; });
				}else{
					$(".scrollMask ul",obj).animate({marginLeft: direction + "px"},options.speed,function(){ animation = false; });
				}
			}
			
			// Aplicao de eventos
			$(".scrollButtom",this).unbind("click").click(function(){
				if(!animation){
					var direction = $(this).attr("rel");
					rolagem(direction);
				}
			});
		});
	}
});


$(document).ready(function(){
						 

////////////////////////
//Rolagem Clientes
///////////////////////

	$('.navegacaoClientes').scrollPages({elementSize:135, elements:4, direction:'left'});
;})