[OpenLayers-Users] proble by update new data in map

[Jan Tappenbeck]

hi !

i insert poi-data via a txt file into a map like 
http://www.tappenbeck.net/osm/haiti/index.php?id=1&type=3&zoom=12&lat=18.57882&lon=-72.27869 
and after update the data on the server the new data will now show 
automatic by the next side-connection. even F5 did not help every time - 
sometimes it need less time.

did anybody know if there is a meta-data or else to process this ?

regards Jan .-)