html, body {
  height: 300px;
  margin: 0;
  padding: 0;
}

#map_canvas {
  height: 300px;
  width: 670px;
  margin-left: 5px;    
}

@media print {
  html, body {
    height: auto;
  }

  #map_canvas {
    height: 300px;
  }
}