jquery带关闭按钮全屏漂浮广告实例代码

        $('body').append(html);

  function init(){
   var x = 0,y = 0
   var xin = true, yin = true
   var step = 1
   var delay = 10
   var obj=$("#float_ad")
   obj.find('img.float_ad_img').load(function(){
    var float = function(){
        var L = T = 0;
     var OW = obj.width();//当前广告的宽
     var OH = obj.height();//高
     var DW = $(document).width(); //浏览器窗口的宽
     var DH = $(document).height();

         x = x + step *( xin ? 1 : -1 );
     if (x < L) {
      xin = true; x = L
     }
     if (x > DW-OW-1){//-1为了ie
      xin = false; x = DW-OW-1
     }

     y = y + step * ( yin ? 1 : -1 );
     if (y > DH-OH-1) {

      yin = false; y = DH-OH-1 ;
     }
     if (y < T) {
      yin = true; y = T
     }

     var left = x ;
     var top = y;

     obj.css({'top':top,'left':left});
    }
    var itl = setInterval(float,options.speed);
    $('#float_ad').mouseover(function(){clearInterval(itl)});
    $('#float_ad').mouseout(function(){itl=setInterval(float, options.speed)} )
   });
   // 点击关闭
   $('#close_float_ad').live('click',function(){
       $('#float_ad').hide();
   });
  }

    init();

 }; //floatAd

})(jQuery);