Here's a copy of the diff between your Form.php and the corrected one I made. 

===================================================================
RCS file: Form.php,v
retrieving revision 1.1
diff -r1.1 Form.php
302c302
<                   $size = 1, $blank = '', $multiple = false)
---
>                   $size = 1, $blank = '', $multiple = false, $attrib = '')
305c305
<                      $blank, $multiple);
---
>                      $blank, $multiple, $attrib);
501c501
<                               $blank = '', $multiple = false)
---
>                               $blank = '', $multiple = false, $attrib = '')
506c506
<         $str .= $this->returnSelect($name, &$entries, $default, $size, $blank, $multiple);
---
>         $str .= $this->returnSelect($name, &$entries, $default, $size, $blank, $multiple, $attrib);