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frameObject.marginWidth=pixels
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<html>
<frameset cols="50%,50%">
<frame id="leftFrame" marginwidth="50"
src="frame_marginwidth.htm">
<frame id="rightFrame" marginwidth="20"
src="frame_a.htm">
</frameset>
</html>
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ÏÂÃæÊÇ "frame_marginwidth.htm" µÄÔ´´úÂ룺
<html>
<body>
script type="text/javascript">
x=parent.document.getElementById("leftFrame");
y=parent.document.getElementById("rightFrame");
document.write("Left/Right margins for leftFrame: ");
document.write(x.marginWidth);
document.write("<br />Left/Right margins for rightFrame: ");
document.write(y.marginWidth);
</script>
</body>
</html>