Google maps, geoxml3, clear before AJAX call

Question

I use geoXML to add many polygons and points to my map. I have KML file that is generated dynamically based on changes in associated form.

...
function xmldata(center,zoom,objects) {                     
var myParser = new geoXML3.parser({map: map, zoom: false});
myParser.parse('http://localhost/private/infofly/misc/nearest.php?zoom=' + zoom + '&coordinates=' + center + '&' + objects + '');
}
...

It works great, but old KML records remain in the map after update. How can i clean objects in map before every new AJAX call?

Answer 1

This should hide all the objects from the previous version:

var myParser=null;  // global myParser reference (outside of any function)
function xmldata(center,zoom,objects) {                     
  if (myParser) myParser.hideDocument();
  myParser = new geoXML3.parser({map: map, zoom: false});
  myParser.parse('http://localhost/private/infofly/misc/nearest.php?zoom=' + zoom + '&coordinates=' + center + '&' + objects + '');
}