[Zope] two things at once

I want to modify two frames at once ie in my side bar I have some links sidebar | Body A | page A B | C | I would like link B to modify the side bar and at the same time move the main body frame to a new location B1 ie sidebar | Body A | page B1 B | B1 | B2 | B3 | C | do I have to go into JScript to do this or is there some neat way to do it? -- Robin Becker