(function($){
     $.fn.lastScrollY= 0;
     $.fn.higo_plugins_ad = function(options){
         $(this).addClass("higo_plugins_ad");
         var settings = $.extend({
            src:null,                    
             closeSrc:null,               
             href:"#",
             autoHide:true,               
             hideSecond:10,               
             top:455,                      
            layout:"left",               
             width:180,                   
             height:90,                  
             opacity:1,
             setPosition:function(left, top){
                 return;
             }
         },options || {});
         
         if(settings.src && settings.closeSrc){        
             var imgEl = "<a href='" + settings.href + "' target='_blank'><img border=0 width='" + settings.width + "px' height='" + settings.height + "px' src='" + settings.src + "'/> <br></a>";
             var closeImgEl = "";
             
             $(this).append(imgEl + closeImgEl);
             
             $(this).css("position","absolute");
             $(this).css("top",settings.top + "px");
             $(this).css("opacity",settings.opacity);
             $(this).css("filter","alpha(opacity=" + parseInt(settings.opacity * 100)  + ")");
             
             switch(settings.layout) {
                case "left":
                     $(this).css("left","22px");
                    break;
                case "right":
                     $(this).css("right","22px");
                     break;
                 case "center":
                    var left = (parseInt(window.screen.availWidth) - parseInt(settings.width))/2 + "px";
                     $(this).css("left",left);
                     break;
                default:
                    $(this).css("left","22px");
                     break;
             }
         } else {
             return;
         }
         
         if(settings.autoHide) {
           setTimeout("(function(){$('" + $(this).selector +  "').hide();})();",parseInt(settings.hideSecond) * 1000);
         }
         
         window.onscroll = function(){
            var diffY;
             if (document.documentElement && document.documentElement.scrollTop)
                 diffY = document.documentElement.scrollTop;
            else if (document.body)
                 diffY = document.body.scrollTop
             else {
                /*Netscape stuff*/
            }
             
            percent= 1 * (diffY - $.fn.lastScrollY);
            if(percent>0)
                percent=Math.ceil(percent);
            else 
                percent=Math.floor(percent);
             
           var top = $('.higo_plugins_ad').css("top");
            
            $('.higo_plugins_ad').css("top", parseInt(top) + percent + "px");
            $.fn.lastScrollY += percent;
        }
    }
})(jQuery);
document.write("<div id='left'></div>");
    $(document).ready(function(){
        $("#left").higo_plugins_ad({
            src:"/Resources/Images/nne.gif",                    
            closeSrc:"close.gif",               
            href:"/guangbo",                    
            autoHide:false,               
            hideSecond:5,               
            top:455,                      
            layout:"left",               
            width:180,                   
            height:90,                  
            opacity:1                     
        });
        	});