复制代码 代码如下:
<html>
<head>
    <meta http-equiv="Content-Type " content="text/html;   charset=gb2312 ">
    <title>list测试</title>
</head>
<body>
    <div style="font-size: 10pt;">
        注1:左右移动进行选取
        <br />
        <br />
        注:本页面仅在IE6/FireFox1.5下测试过。其它浏览器或其它版本未经测试。
        <br />
        <hr />
    </div>
    <form name="frm">
    <table>
        <tr>
            <td>
                <select name="SrcSelect" size="6" style="font-size: 11pt; width: 160px; height: 160px"
                    multiple="multiple" ondblclick="moveLeftOrRight(document.frm.SrcSelect,document.frm.ObjSelect) ">
                    <option value="1">讲师</option>
                </select>
            </td>
            <td width="30px">
                <input align="left" type="button" value="> " onclick="moveLeftOrRight(document.frm.SrcSelect,document.frm.ObjSelect) ">
                <br>
                <br>
                <input align="left" type="button" value=" < " onclick="moveLeftOrRight(document.frm.ObjSelect,document.frm.SrcSelect) ">
            </td>
            <td>
                <select name="ObjSelect" size="6" style="font-size: 11pt; width: 160px; height: 160px"
                    multiple="multiple" ondblclick="moveLeftOrRight(document.frm.ObjSelect,document.frm.SrcSelect) ">
                    <option value="2">教学管理员</option>
                    <option value="3">超级管理员</option>
                </select>
            </td>
        </tr>
    </table>
    </form>
</body>
<script type="text/javascript" language="javascript">
//上移
    function moveUp() {
        var theObjOptions = document.frm.ObjSelect.options;
        for (var i = 1; i < theObjOptions.length; i++) {
            if (theObjOptions[i].selected && !theObjOptions[i - 1].selected) {
                swapOptionProperties(theObjOptions[i], theObjOptions[i - 1]);
            }
        }
    }


//下移
    function moveDown() {
        var theObjOptions = document.frm.ObjSelect.options;
        for (var i = theObjOptions.length - 2; i > -1; i--) {
            if (theObjOptions[i].selected && !theObjOptions[i + 1].selected) {
                swapOptionProperties(theObjOptions[i], theObjOptions[i + 1]);
            }
        }
    }


    function swapOptionProperties(option1, option2) {
        var tempStr = option1.value;
        option1.value = option2.value;
        option1.value = tempStr;
        tempStr = option1.text;
        option1.text = option2.text;
        option2.text = tempStr;
        tempStr = option1.selected;
        option1.selected = option2.selected;
        option2.selected = tempStr;
    }


//列表框的位置移动
    function moveLeftOrRight(fromObj, toObj) {
        for (var i = 0; i < fromObj.length; i++) {
            var srcOption = fromObj.options[i];
            if (srcOption.selected) {
                toObj.appendChild(srcOption);
                i--;
            }
        }
    }
</script>

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