Pass variables to a iframe form

Is there anyway to let say.
I have a page with vars define:

and i have a button and a Iframe on the same page anf in the iframe shows any site where is says;
enter you first name, last name, email address in form fields

Is there anyway, if after i click the button, transfer the vars to the form fields?
The form fields are firstname, lastname, email

Sam CohenConsultant to Digital/DeveloperAsked:
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Do you mean getting php variables?
It's impossible for javascript to read php variables unless you write them to the html and store them as inputs manually.
You can use javascript with prefix parent
You can do something like this though
<iframe src="somepage.html" name="myiframe"></iframe>
<input type=button value="go" onclick="document.myiframe.formname.fieldname.value='test';"/>

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Sam CohenConsultant to Digital/DeveloperAuthor Commented:
So is it something like this:

function Onsubmit()
parent.frame1.document.forms[0].name.value="<?php $fname; ?>";

You have to set a name for the iframe tag as in my code and replace the frame1 in your code with it.
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