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If one window opens another:
<script language="JavaScript"><!--
var msgWindow;
function newWindow(file,window) {
msgWindow=open(file,window,'resizable=no,width=200,height=200');
if (msgWindow.opener == null) msgWindow.opener = self;
}
//--></SCRIPT>
<form>
<input type="button" value="Open New Window" onClick="newWindow('a.html','window2')">
</form>Then to access a variable in the new window from the original window:
var myVar = msgWindow.myVar;
To access a variable in the original window from a frame in the new window:
var myVar = top.opener.myVar;
To access the contents of a form field in a frame in the new window from the original window:
var myVar = msgWindow.frameName.document.formName.formFieldName.value;
To access the contents of a form field in the original window from a frame in the new window:
var myVar = top.opener.document.formName.formFieldName.value;