I want to create a custom DTML-tag. How/where do I start ? My goal is to create a way to define a form and validate the input ( that integers are valid, required fields filled out etc. ) using Javascript in the browser and and on the server side after posting. Any thoughts ? I was thinking something along the lines of : <dtml-form name="form1"> <dtml-field input="text" name="name" type="string" required=1> <dtml-field input="text" name="email" type="string"> <dtml-field input="select" name="programming_language"> <dtml-selectOption>Python</dtml-selectOption> <dtml-selectOption>Perl</dtml-selectOption> <dtml-selectOption>C</dtml-selectOption> </dtml-field> <dtml-field input="checkbox" name="recieve_spam" checked=1> <dtml-field input="submit" caption="Done"> </dtml-form> Any info on how to define your own custom dtml-tags *in python* would be highly appreciated. Anyhow, if the functionality I'm looking for is somehow allready available I'll consentrate on something else. Best regards, Thomas Weholt