code: function(all) {
  			var sel = '.mui-imageviewer-item-left,.mui-imageviewer-item-right';
  			if (all) sel += ",.mui-imageviewer-item";
  			var willdisposes = $(sel);
  			willdisposes.each(function(i, item) {
  				if (item.parentNode && item.parentNode.removeChild)
  					item.parentNode.removeChild(item, true);
  			});
  		}
docs: 释放不显示的图片