[Zope] Calling external method from javascript

Hi, I am having trouble with this part of my program. I have an onclick function that needs to perform three things. I know that I should have a javascript function that basically handles these three operations, but I don't know how to call an external method from javascript. I am using a zope page template if that helps. I have googled on this topic and there is not a lot said about this situation. I did run across someone using dtml and calling dtml methods from javascript but did not see any examples on using it with zope page templates. Typically I would call a external function like this: <div tal:content="python:here.deleteMAC()"> but this won't work. Thanks in Advance. Laura