<form name="form1">
<select name="sel">
<Option value="31">李五 </Option>
<Option value="56">黄三 </Option>
<Option value="59">张飞 </Option>
</select>
<input type="button" value="确定" onclick="onshow()"/>
<input type="num" name=text1 value="">
<input type="myname" name=text2 value="">
</form>
function onshow()
{
document.form1.text1.value=document.form1.sel.value;
document.form1.text2.value=document.form1.sel.options[form1.sel.selectedIndex].text;
}
<select name="sel">
<Option value="31">李五 </Option>
<Option value="56">黄三 </Option>
<Option value="59">张飞 </Option>
</select>
<input type="button" value="确定" onclick="onshow()"/>
<input type="num" name=text1 value="">
<input type="myname" name=text2 value="">
</form>
function onshow()
{
document.form1.text1.value=document.form1.sel.value;
document.form1.text2.value=document.form1.sel.options[form1.sel.selectedIndex].text;
}
<table border=1><tr><td width=100>1</td><td width=100>2</td></tr></table>
<input type=text id=theInput>
</BODY>