图片淡入淡出效果

.myblen {filter:alpha(opacity=0)}　

 

 lowlightiting=setInterval("lowlightit()",20);

lowlightiting=setInterval("lowlightit()",20);

 //淡出
      function lowlightit()
      {     
          if(f.filters.alpha.opacity>5)
          {
            f.filters.alpha.opacity-=5;
          }
          else if(window.lowlightiting)
          {
            clearInterval(lowlightiting);
          }
      }
      
      //淡入
      function highlightit()
      {
          if(f.filters.alpha.opacity<100)
          {
            f.filters.alpha.opacity+=5;
          }
          else if(window.highlighting)
          {
            clearInterval(highlighting);
          }

      }