The Problem

"I have a frameset which contains 3 frames. They are called topFrame, leftFrame and mainFrame. leftFrame contains a link which uses a JavaScript open() command to open a document in a new pop-up window. This window is called pcWin. mainFrame contains a form which is called display. This form contains a hidden field called easting. My need is to find out what the value of the easting field is from within pcWin (the pop-up window that was invoked from leftFrame)."