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<html> <frameset cols="50%,50%"> <frame id="leftFrame" src="frame_scroll.htm"> <frame id="rightFrame" src="frame_a.htm"> </frameset> </html>
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<html> <head> <script type="text/javascript"> function enableScrolling() {parent.document.getElementById("leftFrame").scrolling="yes" parent.document.getElementById("rightFrame").scrolling="yes"
} function disableScrolling() {parent.document.getElementById("leftFrame").scrolling="no" parent.document.getElementById("rightFrame").scrolling="no"
} </script> </head> <body> <input type="button" onclick="enableScrolling()" value="Scroll bars" /> <input type="button" onclick="disableScrolling()" value="No scroll bars" /> </body> </html>