Mootools 1.1 stops CMS open new window javascript

I am installing a Photo Gallery that uses Mootools 1.1 on a CMS my company developed. The CMS has it’s linked javascript files all is nice. But when I add the mootools javascript file, the code that should open a popup window:

<input type="button" value="" 
onclick="getElementById("adb_edit-article").blur();show_window("http://localhost/amika", "article", "photos", 0);" onmouseout="highlight("adb_edit-article", 0)" onmouseover="highlight("adb_edit-article", 1)"  id="adb_edit-article" class="ns_admin_button">

The popup window won’t open. Anyone know why?