代码如下： <!--脚本说明：把如下代码加入<body>区域中:--> <SCRIPT> if (document.layers) { document.writeln ('<STYLE>'); document.writeln (' .changeable { position: relative; }'); document.writeln ('<\/STYLE>'); } </SCRIPT> <SCRIPT> function setElement (id, html) { if (document.layers) { var l = document[id]; if (!l.overLayer) { l.overLayer = new Layer(l.clip.width); l.overLayer.left = l.pageX; l.overLayer.top = l.pageY; l.visibility = 'hide'; l.overLayer.visibility = 'show'; } l.overLayer.document.open(); l.overLayer.document.write(html); l.overLayer.document.close(); } else if (document.all) { document.all[id].innerHTML = html; } } function changeNow() { var user = document.aForm.user.value document.aForm.aField.value = "Welcome "+user+""; setElement ('someParagraph', document.aForm.aField.value); } var nw = "'"; document.write('<FORM NAME="aForm">'); document.write('<INPUT TYPE="hidden" NAME="aField" VALUE="">'); document.write('<SPAN ID="someParagraph" CLASS="changeable">'); document.write('<input type=text name=user size=5> <INPUT TYPE="button" VALUE="输入您的姓名" ONCLICK="changeNow();">'); document.write('</SPAN></form>'); </SCRIPT>
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