<form name=form1>
<table width=700><tr align=center>
<td><textarea name=taleft cols=40 rows=8>
1. hello
2. how are you
3. fine,thanks
4. bye
</textarea></td>
<td>Line:<br><input type=text size=3 name=text1><br><br><input type=button value=" → " onclick=add()></td>
<td><textarea name=taright cols=40 rows=8></textarea></td>
</tr></table>
<script language=javascript>
function add(){
var lines=0,pre=0;
var wd=form1.taleft.value;
for(var ii=0;ii<wd.length;ii++){
if(wd.charCodeAt(ii)==10){
lines++;
if(lines==form1.text1.value){
form1.taright.value+=wd.substring(pre,ii);
}
pre=ii+1;
}
}
if(form1.text1.value>lines){
alert(" 最多 "+lines+" 行 ");
}
}
</script>
<table width=700><tr align=center>
<td><textarea name=taleft cols=40 rows=8>
1. hello
2. how are you
3. fine,thanks
4. bye
</textarea></td>
<td>Line:<br><input type=text size=3 name=text1><br><br><input type=button value=" → " onclick=add()></td>
<td><textarea name=taright cols=40 rows=8></textarea></td>
</tr></table>
<script language=javascript>
function add(){
var lines=0,pre=0;
var wd=form1.taleft.value;
for(var ii=0;ii<wd.length;ii++){
if(wd.charCodeAt(ii)==10){
lines++;
if(lines==form1.text1.value){
form1.taright.value+=wd.substring(pre,ii);
}
pre=ii+1;
}
}
if(form1.text1.value>lines){
alert(" 最多 "+lines+" 行 ");
}
}
</script>
<head>
<title>Untitled Document</title>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<style type="text/css">
<!--
.link { font-family: "Webdings"; font-size: 9pt; line-height: 20pt;text-decoration: none;cursor:hand}
-->
</style>
</head>
<script language="javascript">
<!--
function do_select() {
if (document.form1.select1.options.length > 0) {
var j=0;
for(var i=0;i<document.form1.select1.options.length;i++) {
if(document.form1.select1.options(i).selected) {
j=j+1;
}
}
}
if (j > 0) {
form1.select2.options[document.form1.select2.options.length]=new Option(document.form1.select1.options[document.form1.select1.selectedIndex].value,document.form1.select1.options[document.form1.select1.selectedIndex].text)
document.form1.select1.options[document.form1.select1.selectedIndex]=null
}
}function do_select2() {
if (document.form1.select2.options.length > 0) {
var j=0
for(var i=0;i<document.form1.select2.options.length;i++) {
if(document.form1.select2.options(i).selected) {
j=j+1
}
}
}
if (j > 0) {
document.form1.select1.options[document.form1.select1.options.length] = new Option(document.form1.select2.options[document.form1.select2.selectedIndex].value,document.form1.select2.options[document.form1.select2.selectedIndex].text);
document.form1.select2.options[document.form1.select2.selectedIndex] =null
}
}function do_select3() {
if (document.form1.select1.options.length > 0) {
var n=document.form1.select1.options.length;
for (var i=0;i<n;i++) {
document.form1.select2.options[document.form1.select2.options.length]=new Option(document.form1.select1.options[0].value,document.form1.select1.options[0].text);
document.form1.select1.options[0]=null;
}
}
}function do_select4() {
if (document.form1.select2.options.length > 0) {
var n=document.form1.select2.options.length;
for (var i=0;i<n;i++) {
document.form1.select1.options[document.form1.select1.options.length]=new Option(document.form1.select2.options[0].value,document.form1.select2.options[0].text);
document.form1.select2.options[0]=null;
}
}
}
//-->
</script>
<body bgcolor="#FFFFFF">
<p class="link"> </p>
<form name="form1">
<table width="300" border="0" cellspacing="0" cellpadding="0">
<tr>
<td width="126">
<div align="right">
<select name="select1" size="7" style="WIDTH: 70px" onDblClick="do_select()">
<option value="11111111">11111111</option>
<option value="22222222">22222222</option>
<option value="33333333">33333333</option>
<option value="44444444">44444444</option>
<option value="55555555">55555555</option>
<option value="66666666">66666666</option>
<option value="77777777">77777777</option>
</select>
</div>
</td>
<td width="30">
<div align="center">
<label onClick="do_select()"><font class="link">4</font></label>
<br>
<label onClick="do_select3()"><u class="link">8</u></label>
<br>
<label onClick="do_select4()"><u class="link">7</u></label>
<br>
<label onClick="do_select2()"><u class="link">3</u></label>
</div>
</td>
<td width="144">
<select name="select2" size="7" style="WIDTH: 70px" onDblClick="do_select2()">
</select>
</td>
</tr>
</table>
</form>
</body>
</html>
thank you!