steps to reproduce the issue.
1) login application with user name and password
2) do some operations
3) click on log of
4) re login to application with user name and password. error is as below.
HTTP Status 400 - Invalid direct reference to form login page
type Status report
message Invalid direct reference to form login page
description The request sent by the client was syntactically incorrect (Invalid direct reference to form login page).

Pls suggest me on this.
Here is the login.jsp code.







<a title="<h:outputText value="#{msgs.header_login_prompt}"/>" href="javascript:submitAction();" class="button"><h:outputText value="#{msgs.header_login_prompt}"/>


function submitAction() {
document.getElementById("loading").style.visibility = 'visible';
document.getElementById("loading").style.display = 'block';
document.loginform.submit();
}


when i click on signout, I am invalidating session using session.invalidate();

Please give me some directions on solving this issue.