<body>
<script language="JavaScript">
<!--
//ie,ns下通过
function move(a,b){
var sa=document.frm.elements[a]
var sb=document.frm.elements[b]
with(sa)
for(i=options.length-1;i>=0;i--)
if(options[i].selected){
sb.options[sb.options.length]=new Option(options[i].text,options[i].value)
options[i]=null
}
}
//-->
</script>
<form name=frm>
<select name="s1" size=4 multiple>
<option>1
<option>2
<option>3
<option>4
</select>
<input type="button" value=">>" onclick="move('s1','s2')">
<input type="button" value="<<" onclick="move('s2','s1')">
<select name="s2" size=4 multiple>
<option>.net技术
<option>JAVA世界
</select>
<script language="JavaScript">
<!--
//ie,ns下通过
function move(a,b){
var sa=document.frm.elements[a]
var sb=document.frm.elements[b]
with(sa)
for(i=options.length-1;i>=0;i--)
if(options[i].selected){
sb.options[sb.options.length]=new Option(options[i].text,options[i].value)
options[i]=null
}
}
//-->
</script>
<form name=frm>
<select name="s1" size=4 multiple>
<option>1
<option>2
<option>3
<option>4
</select>
<input type="button" value=">>" onclick="move('s1','s2')">
<input type="button" value="<<" onclick="move('s2','s1')">
<select name="s2" size=4 multiple>
<option>.net技术
<option>JAVA世界
</select>
<script language="JavaScript">
<!--
//ie,ns下通过
function move(a,b){
var sa=document.frm.elements[a]
var sb=document.frm.elements[b]
with(sa)
for(i=options.length-1;i>=0;i--)
if(options[i].selected){
sb.options[sb.options.length]=new Option(options[i].text,options[i].value)
options[i]=null
}
}
//-->
</script>
<form name=frm>
<select name="s1" size=4 multiple>
<option>1
<option>2
<option>3
<option>4
</select>
<input type="button" value=">>" onclick="move('s1','s2')">
<input type="button" value="<<" onclick="move('s2','s1')">
<select name="s2" size=4 multiple>
<option>.net技术
<option>JAVA世界
</select>
分送上! 再次感谢哈!