程序代码:
<script language="JavaScript">
function copyToList(from,to) //from表示:包含可选择项目的select对象名字 to表示:列出可选择项目的select对象名字 //你可以根据你的具体情况修改
{
fromList = eval('document.forms[0].' + from);
toList = eval('document.forms[0].' + to);
if (toList.options.length > 0 && toList.options[0].value == 'temp')
{
toList.options.length = 0;
}
var sel = false;
for (i=0;i<fromList.options.length;i++)
{
var current = fromList.options[i];
if (current.selected)
{
sel = true;
if (current.value == 'temp')
{
alert ('你不能选择这个项目!');
return;
}
txt = current.text;
val = current.value;
toList.options[toList.length] = new Option(txt,val);
fromList.options[i] = null;
i--;
}
}
if (!sel) alert ('你还没有选择任何项目');
}
function allSelect() //这是当用户按下提交按钮时,对列出选择的select对象执行全选工作,让递交至的后台程序能取得相关数据
{
List = document.forms[0].chosen;
if (List.length && List.options[0].value == 'temp') return;
for (i=0;i<List.length;i++)
{
List.options.selected = true;
}
}
function aa()
{ alert("aa");
}
</script>
<table border="0">
<form onSubmit="allSelect()">
<tr>
<td>
<select name="possible" size="4" MULTIPLE width=200 style="width: 200px"
ondblclick="copyToList('possible','chosen')">
<option value="1" onDblClick="aa()">中国广州</option>
<option value="2">中国上海</option>
<option value="3">中国北京</option>
<option value="4">中国武汉</option>
</select>
</td>
<td><a href="javascript:copyToList('possible','chosen')">添加至右方--></a>
<a href="javascript:copyToList('chosen','possible')"><--添加至左方</a></td>
<td>
<select name="chosen" size="4" MULTIPLE width=200 style="width: 200px;"
ondblclick="copyToList('chosen','possible')">
<option value="temp">从左边选择你的地区</option>
</select>
</td>
</tr>
</form>
</table>
[[italic] 本帖最后由 zhulei1978 于 2007-12-22 20:49 编辑 [/italic]]