passing variables from - to frames

Hello, sorry this question here (it is not true PHP question), but I use some variables into PHP scripts and need pass these variables from one frame to another. I want pass variable values between frames, these definded via input hidden tags into form definition. I have first frame name=framea containing form name=forma then second frame name=frameb form name=formb I have forma input type=hidden name=vara value=valuea and want to pass this value to formb type=hidden name=varb I wrote little javascript into framea something like frameb.formb.varb.value = framea.forma.vara.value but only got 'javascript error'. Java doesnt reckognizes frameb.formb.varb names at all. I tried also by creating <object id=frameb> into frameb header but this also didnt work. Is there some other solution? Please help to solve this one Thanks very much Miguel