Google Map KML file in Asp.Net

I am creating KML file for google maps, and the file is generating properly in the same directory. But When I use it in my page, it doesn't show proper map.

Here is my code in javascript 

function init()

                {

                    if (GBrowserIsCompatible()) {

                    

                    geoXml = new GGeoXml("http://localhost:1546/Website1/myKML.kml");

                    //geoXml = new GGeoXml("http://www.spencerwilliams.net/kml/kmltest3.xml");

   map = new GMap2(document.getElementById("map_canvas"));

                    map.setCenter(new GLatLng(0,0),0);      

                    map.addControl(new GLargeMapControl());

                    map.addControl(new GLargeMapControl());

                    map.addOverlay(geoXml);

                    map.setCenter(geoXml.getDefaultCenter()); 

                    geoXml.gotoDefaultViewport(map);

                  }

                }

This function is being called on Body's onload event.

When I used following statement in it, the map was showing proper locations.

Can anybody guide me further please, Peter sir and Mr. Robbe Morris?

Thanks in Advance..

However, in my opinion, the KML url that you are using needs to available on the internet, as it is processed by the Google Servers before the browser processes it. So the localhost url's are skipped.

There is an explanation provided here.