AJAX HTTP Posts: No Response problem (PT5)

Question

To avoid cross-scripting popups and such I am posting to the gateway'ed address. I am still a bit new to PT so forgive me if I am calling this URL something else. (space in http to avoid linking). Making a 'GET' request works like a champ with this URL. Working outside of the portal will also result in much success. But within the portal and making a 'POST' request 'myDiv' never sees content. It seems as if the readystate never gets to 4 -- only 3. Any help?
MY CODE:url = 'h ttp://myPortalServer/portal/server.pt/gateway/PTARGS_0_123_123_0_0_123/https;/myGadgetServer;443/myApp/myForm.htm';
postVars = 'var1=123&var2=123';
target = document.getElementById('myDiv');
http_request.onreadystatechange = processContents;http_request.open('POST', url, true);http_request.setRequestHeader("Content-type", "application/x-www-form-urlencoded");http_request.setRequestHeader("Content-length", postVars.length);http_request.setRequestHeader("Connection", "close");http_request.send(postVars);
function processContents() {if (http_request.readyState == 4) {target.innerHTML = http_request.responseText;}}

Answer 1

A little trial-n-error and solved my own problem. Just removed this line and all works fine. Interesting...
http_request.setRequestHeader("Connection", "close");
vr, Rich