[Zope] Back button (off topic?)

[Michael Long]

Hi,

I am attempting to implement a back button in my zpt page. The following
code works in IE but not Mozilla Firebird. When I click the button in
Firebird nothing happens. I have checked the options in Firebird and
javascipt is enabled. Does anyone know what could be causing this behavior?

<input type="button" value="Back" onClick="history.go(-1);return true;">

Thanks,
Mike