$("document").ready(function(){
	/***不需要自动滚动，去掉即可***/
	var time = window.setInterval(function(){
		$('.picRight').click();	
	},5000);
	$('.picListBd2').mouseover(function() {
			clearInterval(time);
		});
	$('.picListBd2').mouseout(function(){
		  time = window.setInterval(function(){
			$('.picRight').click();	
		 },5000);
	});
	/***不需要自动滚动，去掉即可***/
	var page=1;
	var i=1;
	var box=$('.picListBd2');
	var h=$('.picListBd2 li').width();
	var pagetotal= $('.picListBd2 li').length;
	$(".picListBd2").css("width",pagetotal*h+"px");
	$('.htmlpic2').html($('.htmlpic1').html());//复制内容
   // document.getElementById("a").innerHTML =  document.getElementById("b").innerHTML;
    w = pagetotal*1920;	
    //alert(w);
	$('.picLeft').bind('click',upwardsfn);
	$('.picRight').bind('click',downfn);	
	function upwardsfn(){
		/*
		if($('.htmlpic1,.htmlpic2').is(':animated')){
			$('.htmlpic1,.htmlpic2').stop(true,true);
		}*/
		/*if(page>1){
			box.animate({ marginLeft : '+='+h }, "slow");
			page--;
		}*/
		if($('.htmlpic2,.htmlpic1').is(':animated')){
			$('.htmlpic2,.htmlpic1').stop(true,true);
		}
		if($('.picListBd2 li').length>1){
			ml = parseInt($('.htmlpic1').css('left'));
			sl = parseInt($('.htmlpic2').css('left'));
		   // alert(ml);
			if(ml<=0 && ml>w*-1){
				//alert("aa");
				$('.htmlpic2').css({left: w * -1 + 'px'});
				$('.htmlpic1').animate({left: ml + 1920 + 'px'},'slow');				
				if(ml==0){
					$('.htmlpic2').animate({left: (w - 1920) * -1 + 'px'},'slow');
				}
			}else{
				//alert("bb");
				$('.htmlpic1').css({left: w * -1 + 'px'});
				$('.htmlpic2').animate({left: sl + 1920 + 'px'},'slow');
				if(sl==0){
					$('.htmlpic1').animate({left: ml+1920+'px'},'slow');
				}
			}
		}
	}
	function downfn(){
		/*
		if(pagetotal>page){
			box.animate({ marginLeft : '-='+h }, "slow");
			page++;
		}*/
		if($('.htmlpic1,.htmlpic2').is(':animated')){
			$('.htmlpic1,.htmlpic2').stop(true,true);
		}
		if($('.picListBd2 li').length>1){//多于4张图片

			ml = parseInt($('.htmlpic1').css('left'));//默认图片ul位置
			sl = parseInt($('.htmlpic2').css('left'));//交换图片ul位置
			if(ml<=0 && ml>w*-1){//默认图片显示时

			  // alert("aa");
				$('.htmlpic2').css({left: '1920px'});//交换图片放在显示区域右侧
				$('.htmlpic1').animate({left: ml - 1920 + 'px'},'slow');//默认图片滚动				
				if(ml==(w-1920)*-1){//默认图片最后一屏时

					$('.htmlpic2').animate({left: '0px'},'slow');//交换图片滚动
				}
			}else{//交换图片显示时

			   // alert("bb");
				$('.htmlpic1').css({left: '1920px'})//默认图片放在显示区域右

				$('.htmlpic2').animate({left: sl - 1920 + 'px'},'slow');//交换图片滚动
				if(sl==(w-1920)*-1){//交换图片最后一屏时

					$('.htmlpic1').animate({left: '0px'},'slow');//默认图片滚动
				}
			}
		}
	}
});