LoadVars.send question

Hi Kirupans,
I’m trying to use the send method of a LoadVars object to track statistics via a PHP script, but I have a small problem. Everything works fine when I specify a target in the send method, i.e.:

statsVars.send(“write_stat.php”, “_blank”);

But nothing happens when I don’t specify a target window. Now obviously I need the statistics tracking to be invisible, so I can’t have another window opening up or the window changing to a php page. So is this possible? My understanding from the documentation is that the send method should work regardless.
If you have any information about this, please let me know! Thanks so much!