mode for editing installscript

[John Russell]

I have to edit InstallScript code which is the languange used by InstallShield.
I would like to use emacs but I can't find a good mode for it.  I use C-mode
by default which does OK with some syntax highlighting but the indentation
is all wrong because of the installscript language sturcture.

e.g.

function <functionname>()
         STRING st1
         NUMBER nr1
         BOOL   b1
begin

        if something then
           stuff
        endif;

        <other things>
endif;


Does anyone know of a mode that might be helpful here.  Or at least, a
way to disable the autoinending in C-mode so I can use syntax
highlighting but use tabs a la text-mode.  Thanks a lot.

John
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