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<SCRIPT   LANGUAGE="JavaScript">  
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var iframe = window.frames['boot'];
iframe.document.open();
iframe.document.write('<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">\n');
iframe.document.write('<html xmlns="http://www.w3.org/1999/xhtml">\n');
iframe.document.write('<head>\n');
iframe.document.write('<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />\n');
iframe.document.write('</head>\n');
iframe.document.write('<body>\n');
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iframe.document.write('</body>\n');
iframe.document.write('</html>\n');
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keycode    8 = BackSpace BackSpace
keycode    9 = Tab Tab
keycode   12 = Clear
keycode   13 = Enter
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javascript: The Document Object Model(DOM)

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Node.DOCUMENT_NODE
Node.DOCUMENT_TYPE_NODE
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