Hello,
this is my old problem with Drupal 7 - I was always shy to ask -
I have a custom Javascript drawer menu in a block, it requires JQuery...
While Drupal 7 shipps with a JQuery loading, my Script in Block doesn't see it;
I should explicitly put in Template.php with drupal_add_js a JQuery - then it works;
but - Now I have 2 JQueries loading on a page -
1) by Drupal 7 / Jquery Update Module;
2) below that - my own drupal_add_js JQuery...