拖动层效果,兼容IE和FF!第1/2页

复制代码 代码如下:


<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
    <meta http-equiv="content-type" content="text/html; charset=gb2312">
    <meta http-equiv="content-script-type" content="text/javascript">
    <meta http-equiv="content-style-type" content="text/css">
    <title>DoDi Chat v1.0 Beta</title>
    <style rel="stylesheet" type="text/css" media="all" />
    <!--
    body {
        text-align:left;
        margin:0;
        font:normal 12px Verdana, Arial;
        background:#FFEEFF
    }
    form {
        margin:0;
        font:normal 12px Verdana, Arial;
    }
    table,input {
        font:normal 12px Verdana, Arial;
    }
    a:link,a:visited{
        text-decoration:none;
        color:#333333;
    }
    a:hover{
        text-decoration:none;
        color:#FF6600
    }
    #main {
        width:400px;
        position:absolute;
        left:600px;
        top:100px;
        background:#EFEFFF;
        text-align:left;
        filter:Alpha(opacity=90)
    }
    #ChatHead {
        text-align:right;
        padding:3px;
        border:1px solid #003399;
        background:#DCDCFF;
        font-size:11px;
        color:#3366FF;
        cursor:move;
    }
    #ChatHead a:link,#ChatHead a:visited, {
        font-size:14px;
        font-weight:bold;
        padding:0 3px
    }
    #ChatBody {
        border:1px solid #003399;
        border-top:none;
        padding:2px;
    }
    #ChatContent {
        height:200px;
        padding:6px;
        overflow-y:scroll;
        word-break: break-all
    }
    #ChatBtn {
        border-top:1px solid #003399;
        padding:2px
    }
    -->
    </style>
    <script language="javascript" type="text/javascript">
    <!--
    function ChatHidden()
    {
        document.getElementById("ChatBody").style.display = "none";
    }
    function ChatShow()
    {
        document.getElementById("ChatBody").style.display = "";
    }
    function ChatClose()
    {
        document.getElementById("main").style.display = "none";
    }
    function ChatSend(obj)
    {
        var o = obj.ChatValue;
        if (o.value.length>0){
            document.getElementById("ChatContent").innerHTML += "<strong>Akon说:</strong>"+o.value+"<br/>";
            o.value='';
        }
    }

    if  (document.getElementById)
    {
        (
            function()
            {
                if (window.opera){ document.write("<input type='hidden' id='Q' value=' '>"); }

                var n = 500;
                var dragok = false;
                var y,x,d,dy,dx;

                function move(e)
                {
                    if (!e) e = window.event;
                    if (dragok){
                        d.style.left = dx + e.clientX - x + "px";
                        d.style.top  = dy + e.clientY - y + "px";
                        return false;
                    }
                }

                function down(e)
                {
                    if (!e) e = window.event;
                    var temp = (typeof e.target != "undefined")?e.target:e.srcElement;
                    if (temp.tagName != "HTML"|"BODY" && temp.className != "dragclass"){
                        temp = (typeof temp.parentNode != "undefined")?temp.parentNode:temp.parentElement;
                    }
                    if('TR'==temp.tagName){
                        temp = (typeof temp.parentNode != "undefined")?temp.parentNode:temp.parentElement;
                        temp = (typeof temp.parentNode != "undefined")?temp.parentNode:temp.parentElement;
                        temp = (typeof temp.parentNode != "undefined")?temp.parentNode:temp.parentElement;
                    }

                    if (temp.className == "dragclass"){
                        if (window.opera){ document.getElementById("Q").focus(); }
                        dragok = true;
                        temp.style.zIndex = n++;
                        d = temp;
                        dx = parseInt(temp.style.left+0);
                        dy = parseInt(temp.style.top+0);
                        x = e.clientX;
                        y = e.clientY;
                        document.onmousemove = move;
                        return false;
                    }
                }

                function up(){
                    dragok = false;
                    document.onmousemove = null;
                }

                document.onmousedown = down;
                document.onmouseup = up;

            }
        )();
    }
    -->
    </script>
</head>

<body>
<div id="main" class="dragclass">
    <div id="ChatHead">
        <a href="#" onclick="ChatHidden();">-</a>
        <a href="#" onclick="ChatShow();">+</a>
        <a href="#" onclick="ChatClose();">x</a>
    </div>
    <div id="ChatBody">
        <div id="ChatContent"></div>
        <div id="ChatBtn">
            <form action="" name="chat" method="post">
            <textarea name="ChatValue" rows="3" style="width:350px"></textarea>
            <input name="Submit" type="button" value="Chat" onclick="ChatSend(this.form);" />
            </form>
        </div>
    </div>
</div>

</body>
</html>


一个拖动效果,根据论坛的一些帖子改的,但还有一些BUG一直没法解决,谁能帮我改改?
当第一次拖动层时,层的位置会偏离很远。
呃。。。这涉及到一个style的问题。。。
在ie和firefox中,obj.style这个东西实际上只是取得元素中属性style中的值!
如下例,你会发现style块中的属性一个都取不到!

复制代码 代码如下:

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