The solution is here: http://forum.i-doit.org/index.php/topic,2371.0.html

Need to replace src/classes/cmdb/view/isys_cmdb_view_tree_location.class.php with attached one.

isys_cmdb_view_tree_location.class.php

I got the same.

I have upgraded to 0.9.9-5 and  "function ObjectSelected (objId, objTypeId){ window.location.href = '?' + C__CMDB__GET__OBJECT + '=' + objId; } " appeared when i went to Location tab.

I though that it was a problem with upgrade procedure, but after I reinstalled, the problem didn't go away.