I'm coding up a small Vista/7 sidebar gadget for our web based employee schedule system and I've run into a Javascript problem that my Google-FU can't solve. I can't figure out how to fill in a login form from the client.

I'm creating a new ActiveXObject, navigating to the site, but lost as to where to go from here.

var conn = new ActiveXObject("Microsoft.XMLHTTP");
conn.open("POST", "url", false);
conn.send(null);

Can access the form from the ActiveXObject based on the form id? I'd also assume I'm going to need to change a few headers for a POST vs. a GET?

Thanks for any tips or links to references! I can't seem to find much and JavaScript isn't my forte.