发送php值到php弹出窗体没有提交按钮

i have php variable name $row['State']. this variable is to store State of a user.

On one of the user module management. It allow admin to edit user info. To edit user must click update button whenever user click update button. a php pop up form will appears. The form is full with user information. the form is editable.

Using javascript i managed to display value on pop up form. for example , user name, user address, and so on

The problem is. I have a select Input. the input grab data from xml.then using loop it will generate all States name. Any value that equal to my $row['State'] will make the option properties for selected = selected.

Now my problem is. To send $row['State'] value from Form A . to Form B(-popUpForm-called using onclick javascript). I cant use submit button.