var mCount = 0;
var marker = new Array();

function clearMarkers(){
  i = 0;
  while(mCount > 0) {
    map.removeOverlay(marker[i]);
    mCount--;
    i++;
  }
}

function doMaps2(point1, point2){
  
  // Create Google Maps Pointer
  var point = new GLatLng(point1,point2);   
       
  // Centre the map on Pointer and Zoom
  map.setCenter(point, 11);
  
}