//图片大小 
 var flag=false;
    function DrawImage(ImgD){
   var image=new Image();
   image.src=ImgD.src;
    if(image.width>0 && image.height>0){
    flag=true;
    if(image.width/image.height>= 120/120){
     if(image.width>120){
      ImgD.width=120;
      ImgD.height=(image.height*120)/image.width;
     }else{
      ImgD.width=image.width;
      ImgD.height=image.height;
     }
     ImgD.alt=image.width+"x"+image.height;
     }
     else{
     if(image.height>120){
      ImgD.height=120;
      ImgD.width=(image.width*120)/image.height;
     }else{
      ImgD.width=image.width;
      ImgD.height=image.height;
     }
    ImgD.alt=image.width+"x"+image.height;
    }
   }
    }
//改变图片大小
function resizepic(thispic)
{
if(thispic.width>600) thispic.width=600;
}
//无级缩放图片大小
function bbimg(o)
{
  var zoom=parseInt(o.style.zoom, 10)||100;
  zoom+=event.wheelDelta/12;
  if (zoom>0) o.style.zoom=zoom+'%';
  return false;
}