<Html>
<Head>
<SCRIPT LANGUAGE="JavaScript">
<!--
//定义 select 原值
var oldValue,oldText;
//select下拉框的onkeydown事件，修改下拉框的值
function catch_keydown(sel){
switch(event.keyCode) {
case 13: //回车键
event.returnValue = false;
break;
case 27: //Esc键
sel.options[sel.selectedIndex].text = oldText;
sel.options[sel.selectedIndex].value = oldValue;
event.returnValue = false;
break;
case 8: //空格健
var s = sel.options[sel.selectedIndex].text;
s = s.substr(0,s.length-1);
if (sel.options[0].value==sel.options[sel.selectedIndex].text){
sel.options[sel.selectedIndex].value=s;
sel.options[sel.selectedIndex].text=s;
}
event.returnValue = false;
break;
}
if (!event.returnValue && sel.onchange)
sel.onchange(sel)
}
//select下拉框的onkeypress事件，修改下拉框的值
function catch_press(sel){
if(sel.selectedIndex>=0){
var s = sel.options[sel.selectedIndex].text + String.fromCharCode(event.keyCode);
if (sel.options[sel.selectedIndex].value==sel.options[sel.selectedIndex].text){
sel.options[sel.selectedIndex].value=s;
sel.options[sel.selectedIndex].text=s;
}
event.returnValue = false;
if (!event.returnValue && sel.onchange)
sel.onchange(sel)
}
}
//select下拉框
<body>
<iframe name="pic" src=""; width="400" height="300" marginwidth="0" marginheight="0" frameborder="0" scrolling="no"></iframe>
<p>
<a href="www.163.com" mce_href="www.163.com" target="pic">网易</a>
<a href="www.sina.com.cn" mce_href="www.sina.com.cn" ......
