ok so im having a little issue maybe someone can help me .. I have a script that form fills a site and then submits the info, but I cant figure out how to make the script submit.. on other sites i have had it work... many times but now its not working out with this particular site, maybe someone can give a little insight

 <td class="BBFormButtonCell DonationButtonCell" colspan="3">
                    
                    <input type="submit" name="PC1685$ctl00$btnNext" v
+alue="Donate Now" onclick="(function(btn){var bDisableMe=true;__doPos
+tBack('PC1685$ctl00$btnNext','');btn.disabled=bDisableMe;})(this);ret
+urn false;" id="PC1685_ctl00_btnNext" class="BBFormSubmitButton Donat
+ionSubmitButton" />
[download]

thats the clip from the site where it shows to submit for the donation, i have tried the following:

$agent->click('PC1685$ctl00$btnNext');
$agent->click_button(value => "Donate Now");
$agent->submit();
[download]

none of these seem to click/submit the form.. any info would be greatly appreciated. thanks...