function ch_r() {
  divEl = document.getElementById("forum_route");
  divEl.innerHTML = '<table border="0"><tr><td><input autocomplete="off" tabindex="0" name="route" id="route" type="text" size="10" maxlength="3" value="44" /></td><td><input autocomplete="off" tabindex="10" name="btn" id="btn" type="submit" value="Go!"/></td><td><img src="img/ajax-loader.gif" id="loading" valign="middle" alt="Loading..." title="Loading..." /></td></tr></table><p id="links"><a href="javascript:ch_r()">Bus Routes</a> <a href="javascript:ch_s()">Bus Stops</a></p>';
  document.getElementById('loading').style.visibility = 'hidden';
}

function ch_s() {
  divEl = document.getElementById("forum_route");
  divEl.innerHTML = '';
}

function getMapSize() {
  var myWidth = 0, myHeight = 0;
  if( typeof( window.innerWidth ) == 'number' ) {
    //Non-IE
    myWidth = window.innerWidth;
    myHeight = window.innerHeight;
  } else if( document.documentElement && ( document.documentElement.clientWidth || document.documentElement.clientHeight ) ) {
    //IE 6+ in 'standards compliant mode'
    myWidth = document.documentElement.clientWidth;
    myHeight = document.documentElement.clientHeight;
  } else if( document.body && ( document.body.clientWidth || document.body.clientHeight ) ) {
    //IE 4 compatible
    myWidth = document.body.clientWidth;
    myHeight = document.body.clientHeight;
  }
  document.getElementById('map').style.width = myWidth;
  document.getElementById('map').style.height = myHeight - document.getElementById('searchform').style.height - document.getElementById('content').style.height;
}