Lock pdf form from editing, fields are editable but javascript code assigned to button will not work

I have created a pdf form document, with the normal textfields etc and everything is all good on that side there is also a couple of buttons which have actions to run a javascript, these run fine in the unlocked version however when I lock for editing allowing form fields to be completed etc everything works even the print and reset buttons however the two buttons I have that execute javascript are not working as expected in fact they do nothing at all. Any suggestions would be greatly appreciated.. I have the javascript enabled from within the menu as mentioned it runs fine when not locked with the password.