text: /**
   * TODO: 筛选缩放的图片，小于特定规格的图片不做处理
   * @param  {[type]} img_array [要处理的图片组]
   * @param  {[type]} max_width [最大宽度]
   */
  function grab_img_zoom(img_array, max_width)
  {
  	$.each(img_array, function( i, item_img ) 
  	{
  		var image     = new Image();   
  	 	 	image.src = this.src;
  	 	 	image.i = i;
  	 	 	if(image.complete) 
  	 	 	{
  	 	 		if(image.width <= max_width) 
  				{
  					img_array.eq(image.i).css('width','auto');
  				}
  				else 
  				{
  					if(img_array.eq(image.i).parent().get(0).nodeName.toLocaleLowerCase() == 'a') 
  					{
  						var _parent = img_array.eq(image.i).parent();
  						$('<div style="padding: 3px 0;"><a class="view-origin" href="'+img_array.eq(this.i).attr('src')+'" >查看原图</a></div>').insertAfter($(_parent));
  						return;
  					}
  					zoomImage.add(img_array.eq(this.i));
  				}
  				img_array.eq(image.i).css('visibility','visible').animate({
  					'opacity': 1
  				},500);
  	 	 	}
  	 	 	image.onload = function()
  	 	 	{
  				if(image.width <= max_width) 
  				{
  					img_array.eq(this.i).css('width','auto');
  				} 
  				else 
  				{
  					if(img_array.eq(this.i).parent().get(0).nodeName.toLocaleLowerCase() == 'a') 
  					{
  						var _parent = img_array.eq(this.i).parent();
  						$('<div style="padding: 3px 0;"><a class="view-origin" href="'+img_array.eq(this.i).attr('src')+'" >查看原图</a></div>').insertAfter($(_parent));
  						return;
  					}
  					zoomImage.add(img_array.eq(this.i));
  				}
  				img_array.eq(this.i).css('visibility','visible').animate({
  					'opacity': 1
  				},500);
  	 	 	}
  	});
  }
  /**
   * TODO: 缩略图放大缩小并且居中显示
   * @param  {[type]} host [window对象]
   */
  (function(host) {
  
  	var image_array    = [],
  		ev_click       = 'click',
  		ev_hover       = 'mouseover';
  
  	var cur_in         = _IMG_URL ? 'url('+_IMG_URL+'/css/cursor/zoomin.cur),pointer': 'url(cursor/zoomin.cur), pointer!important',
  		cur_out        =  _IMG_URL ? 'url('+_IMG_URL+'/css/cursor/zoomout.cur),pointer!important' : 'url(cursor/zoomout.cur), pointer!important',
  		cur_out_cls    = 'out_cursor';
  
  	var container_elem = null,
  		origin_img     = null,
  		doc            = null,
  		container_id   = 'img_zoom_container',
  		container_cls  = 'image_zoom';
  
  	var inner_cls      = 'image_zoom_inner',
  		img_cls        = 'origin_image';
  
  	var win_width      = $(window).width(),
  		win_height     = $(window).height();
  
  
  	function add( elem )
  	{
  		image_array[image_array.length] = elem;
  		elem.bind(ev_click, function() 
  		{
  			if(container_elem == null) 
  			{
  				create_container();
  			} 
  			else 
  			{
  				container_elem.show();
  			}
  			zoom_in($(this));
  		});
  		elem.bind(ev_hover, function()
  		{
  			$(this).css('cursor',cur_in);
  		});
  	}
  	function zoom_in(elem)
  	{
  		create_origin_img( elem.attr('src') );
  		pos();
  	}
  	function zoom_out()
  	{
  		container_elem.empty();
  		container_elem.hide();
  	}
  	function create_container()
  	{
  		container_elem = $('<div id="'+container_id+'" class="'+container_cls+'"></div>').appendTo(document.body);
  		container_elem.bind(ev_click,function(){
  			zoom_out();
  			origin_img = null;
  		})
  	}
  	function create_origin_img( src )
  	{
  		if(origin_img != null) 
  		{
  			container_elem.empty();
  		}
  		var div = $('<div class="'+inner_cls+'"></div>');
  		origin_img = $('<img class="'+img_cls+" "+cur_out_cls+'" style="cursor: '+cur_out+';" src="'+src+'" />');
  		container_elem.append(div);
  		div.append(origin_img);
  	}
  	function pos()
  	{
  		doc = doc || $(document);
  		var	width = origin_img.width(), 
  			height = origin_img.height();
  
  		var x = doc.scrollLeft() + (win_width - width)/2, 
  			y = doc.scrollTop() + (win_height - height)/2;
  
  		container_elem.css({
  			'position': 'absolute',
  			'top': y - 10  + 'px',
  			'left': x - 10+ 'px',
  			'width' : width + 'px',
  			'height' : height + 'px'
  		});
  	}
  	host.zoomImage = {
  		add: add,
  		zoom_in: zoom_in,
  		zoom_out: zoom_out
  	}
  })(window);
  
  
  
  