How to move a map marker

To see if it was the web browser control in my mobile app or if it was the website I loaded the web page url into Chrome on my Android phone and it does the same thing. It flashes the whole map away and back when it is rebinding. I am calling databind on the map like this:

 RadMap1.DataBind()

I am doing this with a timer control. Is there a better way to do this so the whole page does not flash? The reason I am binding again is the location of the markers will be changing in the sql table and I need to pull them and update the markers on the map.

URL: www.5ttechnology.com/tmap/map104.aspx

Thanks,

Warren