How to change Layer Size in Dreamweaver MX

<body> <center>Sorry you do not have frames enabled. Here is the link of the tutorial:<br> <a href="http://www.shortcutlearning.com/tutorials/dwmx/dwmxly/dwmxlyd04.php">http://www.shortcutlearning.com/tutorials/dwmx/dwmxly/dwmxlyd04.php</a></center> </body>