jQuery.fn.loadthumb = function(options) {
	options = $.extend({
		 src : ""
	},options);
	var _self = this;
	_self.hide();
	var img = new Image();
	$(img).load(function(){
		_self.attr("src", options.src);
		_self.fadeIn("slow");
	}).attr("src", options.src);
	return _self;
}
$(document).ready(function(){
	 var len  =4;
	 var index = 0;
	 var adTimer;
		$("#next").click(function(){
			clearInterval(adTimer);
			index++
			if(index==4){
				index=0
			}
			showImg(index);
		 });
		 $("#pre").click(function(){
			clearInterval(adTimer);
			if(index==0){
				index=4;
			}
			index--
			showImg(index);
		 });
		adTimer = setInterval(function(){
			    index++;
				if(index==len){index=0;}
				showImg(index);
			  } , 3900);
});
function showImg(index){
		var src = ["uploads/restaurant-lataniere/image_1.jpg","uploads/restaurant-lataniere/image_2.jpg","uploads/restaurant-lataniere/image_3.jpg","uploads/restaurant-lataniere/image_4.jpg"];
		$(".right span img").loadthumb({src:  src[index] });
}