html DOM

[Sam the Cat]

Is there a package that would allow me the same or similar functionality for 
modifying html code via the DOM model as I have in JavaScript ?  I'd like to 
parse an html file, then modify it and save the result.  I am not trying to 
do this online, rather I would like to do this on a batch of files stored on 
my hard drive.  I have found several packages that allow me to parse and 
dissect html but none that allow me to modify the object and save the 
results -- perhaps I am overlooking the obvious