how can I submit a httprequest in javascript

I would like to submit the url like that : "ReportController?action=logout" in javascript, how can I do that? Because I have implemented a logout menthod for windows onbeforeunload event, which means when user close brower, the logout action will be automatically triggered and submitted to server. I use the below method, but it seems doesn't work.

function logout() {

document.mainform.method="post";

document.mainform.action="ReportController?action=logout";

document.mainform.target="_self";

document.mainform.submit();

}

Message was edited by:

henry_22

Message was edited by:

henry_22

[659 byte] By [henry_22a] at [2007-11-27 6:39:49]