var slide_marginLeft=0;
var slide_max=4;
$(function(){
		$(".larr").click(function(){
			play=false;
			if(slide_marginLeft+1000<=0){
				slide_marginLeft=slide_marginLeft+1000;
				$(".parr>div").removeClass("cur").eq(-slide_marginLeft/1000).addClass("cur");
				$(".slideInner").stop().animate({marginLeft:slide_marginLeft},1500);
			}else{
				if(slide_marginLeft>-($(".parr>div").length-1)*1000){
					slide_marginLeft=-($(".parr>div").length)*1000;
					$(".slideInner").css('margin-left', parseInt($(".slideInner").css('margin-left'))-1000*slide_max);
				}else{
					slide_marginLeft=slide_marginLeft+1000;
				}
				slide_marginLeft=-($(".parr>div").length-1)*1000;
				$(".parr>div").removeClass("cur").eq(-slide_marginLeft/1000).addClass("cur");
				$(".slideInner").stop().animate({marginLeft:slide_marginLeft},1500);
			}
		});
		$(".rarr").click(function(){
			play=false;
			if(slide_marginLeft-1000>=-1000*(slide_max-1)){
				slide_marginLeft=slide_marginLeft-1000;
				$(".parr>div").removeClass("cur").eq(-slide_marginLeft/1000).addClass("cur");
				$(".slideInner").stop().animate({marginLeft:slide_marginLeft},1500);
			}else{
				if(slide_marginLeft<-1000*(slide_max-2)){
					slide_marginLeft=0;
					$(".slideInner").css('margin-left', parseInt($(".slideInner").css('margin-left'))+1000*slide_max);
				}else{
					slide_marginLeft=slide_marginLeft-1000;
				}
				$(".parr>div").removeClass("cur").eq(-slide_marginLeft/1000).addClass("cur");
				$(".slideInner").stop().animate({marginLeft:slide_marginLeft},1500);
			}
		});
		function auto_time(){
			if(play){
				if(slide_marginLeft-1000>=-1000*(slide_max-1)){
					slide_marginLeft=slide_marginLeft-1000;
					$(".parr>div").removeClass("cur").eq(-slide_marginLeft/1000).addClass("cur");
					$(".slideInner").stop().animate({marginLeft:slide_marginLeft},1500);
				}else{
					if(slide_marginLeft<-1000*(slide_max-2)){
						slide_marginLeft=0;
						$(".slideInner").css('margin-left', parseInt($(".slideInner").css('margin-left'))+1000*slide_max);
					}else{
						slide_marginLeft=slide_marginLeft-1000;
					}
					$(".parr>div").removeClass("cur").eq(-slide_marginLeft/1000).addClass("cur");
					$(".slideInner").stop().animate({marginLeft:slide_marginLeft},1500);
				}
				setTimeout(auto_time,6000);
			}else{
				play=true;
				setTimeout(auto_time,20000);
			}
		};
		$(".parr>div").click(function(){
			play=false;
			if($(this).attr("class")!="cur"){
				slide_marginLeft=-$(this).index()*1000;
				$(".parr>div").removeClass("cur").eq(-slide_marginLeft/1000).addClass("cur");
				$(".slideInner").stop().animate({marginLeft:slide_marginLeft},1500);
			}
		});
		play=true;
		setTimeout(auto_time,6000);
});