代码比较冗余，还没来得及做整理，往见谅。

主要用到的 JS 事件有：

　　onmousedown：鼠标点下事件

　　onmousemove：鼠标移动事件

　　onmouseup：鼠标放开事件

具体代码如下：

<!doctype html>

<html lang="en">

<head>

    <meta charset="UTF-8">

    <title>列拖动</title>

    <style type="text/css">

        body,ul,li {padding: 0; margin: 0;}

        ul, li {list-style: none;}

        .left {width: 300px; float: left;margin: 3px;}

        .right {width: 300px; float: left; margin:3px;}

        .column {width: 200px;height: 30px; line-height: 30px; background-color: #AACCFF; margin: 8px 5px; text-align: center; cursor: pointer;}

        .columnOld {width: 200px; height: 30px; line-height: 30px; background-color: #CCC; margin: 8px 5px; text-align: center;}

        .target {border: 1px solid #CCC; background-color: #FFF5EE;box-shadow: 0 0 8px #CCC; -moz-box-shadow: 0 0 8px #CCC; -webkit-box-shadow: 0 0 8px #CCC;}

        .container {width: 600px; height: 200px; display: block;}

    </style>

    <script type="text/javascript" src="jquery.js"></script>

    <script type="text/javascript">

    window.onload = function(){

        var Lis = document.getElementsByClassName("column");

        var container = document.getElementsByClassName("container")[0];

        for (var i = Lis.length - 1; i >= 0; i--) {

            var obj = Lis[i];

            var source = obj.parentNode;

            var target = document.getElementById("container");

            moveColumn(obj, target, source);

        }

    }

    /**

         * 字段拖拽事件

     */

    function moveColumn(obj, target, source) {

        // 1. 获取事件

        obj.onmousedown = function(event) {

            var ev = event || window.event;

            // 2. 复制新节点，设置透明度和innerHTML，class

            var newObj = document.createElement("li");

            newObj.className = 'column';

            newObj.style.opacity = '0.5';

            newObj.style.filter = 'alpha(opacity:50)';

            newObj.innerHTML = obj.innerHTML;

            newObj.style.margin = '0';

            newObj.style.position = 'absolute';

            newObj.style.zIndex = '5';

            newObj.source = source;

            // 3. 计算点击点在 obj 上的位置

            var disH = ev.clientY - obj.offsetTop;

            var disL = ev.clientX - obj.offsetLeft;

            // 4. 设置绝对定位的top和left

            newObj.style.top = obj.offsetTop + 'px';

            newObj.style.left = obj.offsetLeft + 'px';

            // 5. 添加节点

            obj.parentNode.appendChild(newObj);

            // 6. 鼠标移动事件

            document.onmousemove = function(e) {

                // 1. 获取事件

                var e = e || window.event;

                // 2. 获取鼠标位置，设置newObj的定位

                var L = e.clientX - disL;

                var T = e.clientY - disH;

                newObj.style.top = T + 'px';

                newObj.style.left = L + 'px';

                // 3. source 背景色和边框变换

                $(target).addClass("target");

                obj.className = "columnOld";

            }

            // 7. 鼠标松开事件

            document.onmouseup = function() {

                $(target).removeClass("target");

                // target.class = '';

                var not = newObj.offsetTop;

                var nol = newObj.offsetLeft;

                var tot = target.offsetTop;

                var tol = target.offsetLeft;

                    if (not >= tot && nol >= tol && not <= tot + target.offsetHeight && nol <= tol + target.offsetWidth) {

                        newObj.removeAttribute('style');

                        newObj.className = "column";

                        newObj.style.float = "left";

                        target.appendChild(newObj);

                        backColumn(newObj, source, target);

                        var id = obj.id;

                        newObj.id = id;

                        obj.id = id + "_old";

                        obj.onmousedown = null;

                    } else {

                        obj.className = "column";

                        obj.parentNode.removeChild(newObj);

                    }

                    document.onmouseup = null;

                    document.onmousemove = null;

            }

        }

    }

    function backColumn(obj, target, source) {

        var Lis = source.getElementsByTagName('li');

        var lineNum = Math.floor(source.offsetWidth / 210);

        var liFirst = Lis[0].offsetTop;

        var liHeight = Lis[0].offsetHeight;

        var liWidth = Lis[0].offsetWidth;

        // 1. 获取事件

        obj.onmousedown = function(event) {

            var ev = event || window.event;

            // 2. 复制新节点，设置透明度和innerHTML，class

            var newObj = document.createElement("li");

            newObj.className = 'column';

            newObj.style.opacity = '0.5';

            newObj.style.filter = 'alpha(opacity:50)';

            newObj.innerHTML = obj.innerHTML;

            newObj.style.margin = '0';

            newObj.style.position = 'absolute';

            newObj.style.zIndex = '5';

            // 3. 计算点击点在 obj 上的位置

            var disH = ev.clientY - obj.offsetTop;

            var disL = ev.clientX - obj.offsetLeft;

            // 4. 设置绝对定位的top和left

            newObj.style.top = obj.offsetTop + 'px';

            newObj.style.left = obj.offsetLeft + 'px';

            // 5. 添加节点

            obj.parentNode.appendChild(newObj);

            // 6. 添加空白节点（占位）

            var blank = document.createElement("li");

            blank.className = 'column';

            blank.style.backgroundColor = '#63B8FF';

                blank.style.float = "left";

            // 6. 鼠标移动事件

            document.onmousemove = function(e) {

                // 1. 获取事件

                var e = e || window.event;

                // 2. 获取鼠标位置，设置newObj的定位

                var L = e.clientX - disL;

                var T = e.clientY - disH;

                newObj.style.top = T + 'px';

                newObj.style.left = L + 'px';

                // 3. source 背景色和边框变换

                $(target).addClass("target");

                obj.className = "columnOld";

                // 根据当前拖拽到的位置计算其重新排序后的位置

                var line = lineNum * Math.round((T - liFirst)/liHeight)

          var n = line + Math.floor(L / liWidth);

          // 将空白节点插入到该位置

          // if ()

          source.insertBefore(blank,source.children[n]);

            }

            // 7. 鼠标松开事件

            document.onmouseup = function() {

                $(target).removeClass("target");

                // target.class = '';

                var not = newObj.offsetTop;

                var nol = newObj.offsetLeft;

                var tot = target.offsetTop;

                var tol = target.offsetLeft;

                    if (not >= tot && nol >= tol && not <= tot + target.offsetHeight && nol <= tol + target.offsetWidth) {

                        var oldObj = document.getElementById(obj.id + '_old');

                        oldObj.className = 'column';

                        source.removeChild(newObj);

                        source.removeChild(obj);

                        oldObj.id = obj.id;

                        moveColumn(oldObj, source, target);

                        obj.onmousedown = null;

                    } else {

                        obj.className = "column";

                        obj.parentNode.removeChild(newObj);

                        // 将被拖拽的元素插入到空白节点的位置

                        if (blank.parentNode == source) {

                source.insertBefore(obj,blank);

                        }

            // 删除拖拽样式

            // obj.removeAttribute('style');

                    }

                    if (blank.parentNode == source) {

              // 删除空白节点

              source.removeChild(blank);

            }

                    document.onmouseup = null;

                    document.onmousemove = null;

            }

        }

    }

    function getStyle(obj, attr) {

            if (obj.currentStyle) {

                return obj.currentStyle[attr];

            } else {

                return getComputedStyle(obj, false)[attr];

            }

        }

    </script>

</head>

<body>

    <div style="overflow: hidden;">

    <ul class="left">

        <li class="column" id="c1">字段a-1</li>

        <li class="column" id="c2">字段a-2</li>

        <li class="column" id="c3">字段a-3</li>

        <li class="column" id="c4">字段a-4</li>

        <li class="column" id="c5">字段a-5</li>

    </ul>

    <ul class="right">

        <li class="column" id="c6">字段b-1</li>

        <li class="column" id="c7">字段b-2</li>

        <li class="column" id="c8">字段b-3</li>

        <li class="column" id="c9">字段b-4</li>

        <li class="column" id="c10">字段b-5</li>

    </ul>

    </div>

    <div class="container" id="container">

    </div>

</body>

</html>

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