function ImgAuto(i,MaxW,MaxH){var o=new Image();o.src=i.src;var w=o.width;var h=o.height;var t;if (w>MaxW){t=MaxW;}else{t=w;}if ((h*t/w)>MaxH){i.height=MaxH;i.width=MaxH/h*w;}else{i.width=t;i.height=t/w*h;}}

$(document).ready(function(){	
  $('li.mainlevel').mousemove(function(){
    $(this).find('ul').slideDown(500);
	$(this).find('ul').width($(this).width()).find('li').width($(this).width()).find('a').width($(this).width()-10);
  });
  $('li.mainlevel').mouseleave(function(){
    $(this).find('ul').stop(false,true).slideUp(100);
  });
  //
  $(window).scroll(function(){
	var mtop=$("footer").offset().top - $(window).scrollTop();//某元素到浏览器顶部距离
	if ($("#mid_lt").height()<$(window).height()&&$("#mid_lt").height()<$("#mid_rt").height()){
	  if($(this).scrollTop()>$("#mid_rt").offset().top&&$("#mid_lt").height()<mtop){$("#mid_lt").css({"position":"fixed","top":"-20px"})} else{$("#mid_lt").css({"position":"relative","top":"0px"})};
	}
  }); 
  // 
  window.onload=function(){
	  var config = {
	   reset:  false,
	   move: '50px',
	   vFactor : 0.50,
	  }
	  window.sr = new scrollReveal(config);
	  $("#banner").height($("#banner>div").find("img").height()).find("div").height($("#banner>div").find("img").height());
  }
  $("#online>ul>li>.tb4").click(function(){$('body,html').animate({scrollTop:0},500);});
});

//图片滚动 调用方法 imgscroll({speed: 30,amount: 1,dir: "up"});
$.fn.imgscroll = function(o){
	var defaults = {
		speed: 40,
		amount: 0,
		width: 1,
		dir: "left"
	};
	o = $.extend(defaults, o);
	
	return this.each(function(){
		var _li = $("li", this);
		_li.parent().parent().css({overflow: "hidden", position: "relative"}); //div
		_li.parent().css({margin: "0", padding: "0", overflow: "hidden", position: "relative", "list-style": "none"}); //ul
		_li.css({position: "relative", overflow: "hidden"}); //li
		if(o.dir == "left") _li.css({float: "left"});
		
		//初始大小
		var _li_size = 0;
		for(var i=0; i<_li.size(); i++)
			_li_size += o.dir == "left" ? _li.eq(i).outerWidth(true) : _li.eq(i).outerHeight(true);
		
		//循环所需要的元素
		if(o.dir == "left") _li.parent().css({width: (_li_size*3)+"px"});
		_li.parent().empty().append(_li.clone()).append(_li.clone()).append(_li.clone());
		_li = $("li", this);
 
		//滚动
		var _li_scroll = 0;
		function goto(){
			_li_scroll += o.width;
			if(_li_scroll > _li_size)
			{
				_li_scroll = 0;
				_li.parent().css(o.dir == "left" ? { left : -_li_scroll } : { top : -_li_scroll });
				_li_scroll += o.width;
			}
				_li.parent().animate(o.dir == "left" ? { left : -_li_scroll } : { top : -_li_scroll }, o.amount);
		}
		
		//开始
		var move = setInterval(function(){ goto(); }, o.speed);
		_li.parent().hover(function(){
			clearInterval(move);
		},function(){
			clearInterval(move);
			move = setInterval(function(){ goto(); }, o.speed);
		});
	});
};