function _resize(img,width,height)
{
   if(img.width>width){
        img.height=(img.height*width) / img.width;
        img.width=width;
   }
   if(img.height>height){
        img.width =(img.width * height) / img.height;
        img.height=height;
   }
   return;
}

function _thumbnail_view( iurl, width, height,align)
{
   str ="<img src='"+iurl+"?thumbnail' width='"+width+"'";
   if(align.length>0) str +=(" align='"+align+"'");
   str+=(" border=0 onLoad=\"_resize(this,"+width+","+height+");\">");
   document.write(str);

   return ;
}