alexlan

WP version: 2.9.2
WP-polls version: 2.50
Issue: impossible to click ‘Vote’ button under FireFox, clicking ‘Vote’ button causes JS error under IE7, IE8.
Theme: custom

Solution:
I checked if it is working in the default WP theme – and it worked properly. Then I checked if I had <?php wp_footer(); ?> in the footer.php and <?php wp_header(); ?> in the header.php – I had them both in my custom theme. Then based on the suggestions from priyankanm I started looking for all ‘junk’ in my custom theme’s PHP files. After 2 hours of research I found, that if my custom Footer.php is replaced with the default Footer.php (from Default WP theme), the problem is solved and ‘Vote’ button worked.

As I hadn’t more time for this, I just replaced my custom footer.php with the default one, and the only thing I modified in it was adding a one <div> block with footer image in it.

Here is a list of things that I removed from the footer, maybe some of them caused the issue:

<?php wp_get_archives('title_li=&type=postbypost&limit=5'); ?>
...
<?php if (function_exists('mdv_recent_comments')) { mdv_recent_comments(5); } ?>
...
<?php wp_cumulus_insert(); ?>
...

Thanks to everyone.