'rows' Example
<html> <head> <script language="JavaScript"> document.getElementById("yourFrameset").rows = 600; </script> </head> <frameset id="yourFrameset" frameborder="yes" border="20px" framespacing="5" cols="*"> <frame id="topF" name="topFrame" scrolling="NO" noresize src="http://www.java2s.com"> <frame name="leftFrame" marginwidth="15" noresize scrolling="NO" src="http://www.java2s.com"> <frame name="mainFrame" src="http://www.java2s.com"> </frameset> </html>