Is there a way to hide/unhide an INLINE HTML field using a clientscript? isDisplay returns an error of "TypeError Cannot set properties of null (setting 'isDisplay')".

if it's html just use css? display:none

I need to hide it and unhide it depending on other fields (using fieldchanged mostly).

jQuery('#myfieldid').hide() and .show() should work

That worked! Thank you so much! I appreciate the help!