[SOLVED][Drupal Colorbox] How to open Colorbox to 90% of user's browser screen height

For setting the standard size of Colorbox, follow the steps below.

• Go to the Colorbox configurations page at "admin/config/media/colorbox".
• Next click "Configuration" and there you will find the Colorbox link in the media section.
• From there set the maximum height and maximum width of the Colorbox to your desired settings.
• If you want to limit the size of the Colorbox via url then check the sample url link below
  

  <a class="colorbox-load" href="http://www.youlink.com/embed/Zadfdq-c?width=90%25&height=90%25&iframe=true" title="YouLink">Open Link</a>

• Just take care to urlencode the % sign so it becomes "%25" as show in the sample url
• The "maxWidth" and "maxHeight" is to limit the Colorbox to the specified values.

Hope that helps.