Hi,
Please see below code snippet for the HTML form for your reference.

<div id="loginArea">        
        <div id="loginMessage" class="groupMargin">Sign in with your a
+ccount</div>
        <form method="post" id="Login" autocomplete="off" novalidate="
+novalidate" onkeypress="if (event &amp;&amp; event.keyCode == 13) Log
+in.submitLoginRequest();" action="">
            <div id="formsAuthenticationArea">
                <div id="userNameArea">
                    <input id="userNameInput" name="UserName" type="em
+ail" value="" tabindex="1" class="text fullWidth" spellcheck="false" 
+placeholder="Username" autocomplete="off">     
                </div>
                <div id="passwordArea">
                     <input id="passwordInput" name="Password" type="p
+assword" tabindex="2" class="text fullWidth" placeholder="Password" a
+utocomplete="off">                                   
                </div>
                <div id="kmsiArea" style="display:none">
                    <input type="checkbox" name="Kmsi" id="kmsiInput" 
+value="true" tabindex="3">
                    <label for="kmsiInput">Keep me signed in</label>
                </div>
                <div id="submissionArea" class="submitMargin">
                    <span id="submitButton" class="submit" tabindex="4
+" onkeypress="if (event &amp;&amp; event.keyCode == 32) Login.submitL
+oginRequest();" onclick="return Login.submitLoginRequest();">Sign in<
+/span>
                </div>
            </div>
        </form>
    </div>
[download]

Yes, the login site is not mine, but I wanted to submit the form with the credentials that I have for me to be able to go through to the site I intended to go.
We used WWW::Mechanize for this using the code snippet below:

my $mech = WWW::Mechanize->new();
                $response = $mech->get($URL);

                $mech->submit_form(
                fields => {
                UserName => $username,
                Password  => $password,
                },);
[download]

but I am unable to go through the login site. I suspect that it is because of the JavaScript that is in the form and or the span.
Any suggestions or advice on how to submit the form?

Your help is highly appreciated. Thank you in advance.