//----------定义幻灯片类
(function () {
  $.fn.slideshow = function (speed,autohei) {
	  return this.each(function (i) {
		var curr = 0,
			child_size = $(this).find('li').size(),
			firstli = $(this).find('li:first').html(),
			autoplay = true,
			millisec = 4000,/*自动播放间隔*/
		    _this = $(this);
		
		if(autohei=='true'){
		  _this.append('<div style="overflow:hidden; font-size:0; line-height:0;opacity:0;filter:alpha(opacity=0); -moz-opacity:0; -khtml-opacity:0;">'+firstli+'</div>');	
		}
		/*添加按钮*/
		if(child_size>1){
		  var btn = "<div id='control'><a class='prev'></a><a class='next'></a></div>";
		  $(this).append(btn);
		}
		
		/*上一页按钮*/
		$(this).find('.prev').click(function() {
			todo = curr-1<0?child_size-1:curr-1;
			var currli = _this.find('li').eq(curr);
			var prevli = _this.find('li').eq(todo);
			currli.css({'z-index':1}).stop(true,false).animate({'left':'30%'},speed,function(){$(this).css('display','none')});
			prevli.css({'z-index':2,'display':'block','left':'-100%'}).stop(true,false).animate({'left':'0'},speed);
			curr = todo;
		});
	
		/*下一页按钮*/
		$(this).find('.next').click(function() {
			todo = (curr + 1) % child_size;
			var currli = _this.find('li').eq(curr);
			var nextli = _this.find('li').eq(todo);
			currli.css({'z-index':2}).stop(true,false).animate({'left':'-100%'},speed,function(){$(this).css('display','none')});
			nextli.css({'z-index':1,'display':'block','left':'30%'}).stop(true,false).animate({'left':'0'},speed);
			curr = todo;
		});
		
		/*自动播*/
		auto_play = setinterval(function() {
		  if(autoplay && child_size>0){
			 _this.find('.next').click();
		  }
		},millisec);
		
		$(this).hover(function() {
		  autoplay = false;
	    },function() {
		  autoplay = true;
	    })

	  });
  };
})(jquery);

/*----------滚动----------*/
(function () {
  $.fn.roll = function (speed,btn_left,btn_right,auto) {
	  return this.each(function (i) {
		var boxwidth,liwidth,lisize,
		  childul = $(this).children('ul'),
		  stopplay = false,
		  _this = $(this);
	  
	  var ulcont = childul.html();
	  childul.append(ulcont);
	  
	  function getparameter(){
		  lisize = _this.find('li').size();
		  boxwidth = _this.innerwidth();
		  liwidth = _this.find('li:first').outerwidth(true);
		  ulwidth = lisize/2*liwidth;
		  childul.css('width',liwidth*lisize);
	  }
	  getparameter();
	  $(window).resize(function(){
		 getparameter();
	  });
	  
	  $(btn_left).click(function(){
		  childul.stop(true,true);
		  targetleft = parseint(childul.css('left'))+liwidth;
		  if(targetleft>=liwidth){
			 childul.css('left',ulwidth*-1);
		  }
		  childul.animate({left : '+='+liwidth},speed);
	  })
	  
	  $(btn_right).click(function(){
		  childul.stop(true,true);
		  targetleft = parseint(childul.css('left'))-liwidth;
		  if(targetleft < ulwidth*-1){
			 childul.css('left',0);
		  }
		  childul.animate({left : '-='+liwidth},speed);
	  })
	  
	  /*自动播*/
	  if(auto=="autoplay" && lisize>0){
		autoplay = setinterval(function() {
			if(!stopplay){$(btn_right).click()};
		},3500);
		
		_this.hover(function() {
		  stopplay = true;
	    },function() {
		  stopplay = false;
	    })
	  }
	});
  };
})(jquery);