function load_map($map_id) {
   $elem=document.getElementById($map_id);
	 $elem.style.display='block';
			if($map_id=='googlemap1'){
         document.getElementById('googlemap2').style.display='none';
      }else if($map_id=='googlemap2'){
         document.getElementById('googlemap1').style.display='none';
			}   
	 
	 if (GBrowserIsCompatible()) {
      var $map = new GMap2($elem);
			if($map_id=='googlemap1'){
         $point=new GLatLng(53.87459,-1.8749);
      }else if($map_id=='googlemap2'){
         $point=new GLatLng(51.57016,-1.76222);
			}      
			$map.setCenter($point,13);
      var $marker = new GMarker($point);
      $map.addOverlay($marker);
			if($map_id=='googlemap1'){
         $marker.openInfoWindowHtml('<strong>The Britannic Lift Company plc</strong><br />Head Office');
			}else if($map_id=='googlemap2'){
         $marker.openInfoWindowHtml('<strong>The Britannic Lift Company plc</strong><br />Swindon Office');
			}
      $map.addControl(new GLargeMapControl());
   }
	 return true;
}