让焦点自动跳转

<html> <head> <meta http-equiv="Content-Type" content="text/html; charset=gb2312"> <title>html－www.51windows.Net</title> </head> <body> 以下四个文本框，每个限输入四个字符，输入完后自动跳到下一文本框 <script ID="clientEventHandlersJS" LANGUAGE="javascript">  </script> <form method="POST" name="card" action> 输入字符： <input type="text" name="T1" size="4" maxlength="4" LANGUAGE="javascript" onkeyup="return T1_onkeyup()">- <input type="text" name="T2" size="4" maxlength="4" LANGUAGE="javascript" onkeyup="return T2_onkeyup()">- <input type="text" name="T3" size="4" maxlength="4" LANGUAGE="javascript" onkeyup="return T3_onkeyup()">- <input type="text" name="T4" size="4" maxlength="4"> </form> </body> </html> <div style="position: absolute; top: 10; right: 10; width: 148; height: 18;cursor:hand"> <input type="button" name="Button" value="查看源代码" onClick= 'window.location = "view-source:" + window.location.href'></div>

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<html> <head> <title>测试转发一下</title> </head> <body leftmargin="0" topmargin="0" marginwidth="0" marginheight="0" style="overflow-x:hidden;overflow-y:hidden"> <div id="adslxp" style="display: no>>>详细阅读

本文标题：让焦点自动跳转

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