Script Produces Different Results Depending on Role and User

Hello Yang (and everyone else),

I am currently running a script that is designed to hide the 'remove', 'edit', and 'download' link line item fields under the Files tab in a TASK record.

The script is a User Event type, activated on before Load, and is set for locking the attached documents to the record.

Here's the code:

 function beforeLoad(type, form)  {  if (type == 'view')   {  //locate the field ids  var attachfield = nlapiGetField('mediaitem');  var blockremove = nlapiGetLineItemField('mediaitem','remove','1');  var blockedit = nlapiGetLineItemField('mediaitem','edit','1');  var blockdownload = nlapiGetLineItemField('mediaitem','download','1');    //hide buttons   form.removeButton('edit');            form.removeButton('makecopy');   form.removeButton('new');   form.removeButton('addmediaitem');  //hides the attach doc field for uploading   attachfield.setDisplayType('hidden');   //hides line items   blockremove.setDisplayType('hidden');   blockedit.setDisplayType('hidden');   blockdownload.setDisplayType('hidden');  }  }