[HELP] How can javascript reference to 1 html:hidden tag or html:text ???

[Pham Anh Tuan]

Hi,

I don't know how javascript reference to 1 html:hidden tag or html:text tag of 
struts tag lib and change their value.

for example:

I have <html:hidden property="userId">

How can I change the value of tag above by javascript.

Maybe document.all.userId.value="somevalue" <-- like this ???

help me :(