function resize_images()
  {
    for (i = 0; i < document.images.length; i++)
    {
      while ( !document.images[i].complete )
      {
       break;
      }
      limitew = 700;
      if ( document.images[i].width > limitew )
      {
   w = document.images[i].width;
   h = document.images[i].height;
   distancedelalimite = w-limitew;
   coefficient = distancedelalimite/w;
   height = h-coefficient*h;
   document.images[i].height = Math.round(height);
   document.images[i].width = limitew;
      }
    }
  }