DIV弹出层

<html xmlns="http://www.w3.org/1999/xhtml" >

<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
<title>弹出模态对话框测试[IE6下测试通过]</title>

<style type="text/css">
    .hideDlg
    {
        height:129px;368px;
        display:none;
    }
    .showDlg
    {
        background-color:#ffffdd;
        border-3px;
        border-style:solid;
        height:129px;368px;
        position: absolute; 
        display:block;
        z-index:5;
    }
    .showDeck {
        display:block;
        top:0px;
        left:0px;
        margin:0px;
        padding:0px;
        100%;
        height:100%;
        position:absolute;
        z-index:3;
        background:#cccccc;
    }
    .hideDeck 
    {
        display:none;
    }
</style>

<script type="text/javascript">
    function showDlg()
    {
        //显示遮盖的层
        var objDeck = document.getElementById("deck");
        if(!objDeck)
        {
            objDeck = document.createElement("div");
            objDeck.id="deck";
            document.body.appendChild(objDeck);
        }
        objDeck.className="showDeck";
        objDeck.style.filter="alpha(opacity=50)";
        objDeck.style.opacity=40/100;
        objDeck.style.MozOpacity=40/100;
        //显示遮盖的层end
        
        //禁用select
        hideOrShowSelect(true);
        
        //改变样式
        document.getElementById('divBox').className='showDlg';
        
        //调整位置至居中
        adjustLocation();
        
    }
    
    function cancel()
    {
        document.getElementById('divBox').className='hideDlg';
        document.getElementById("deck").className="hideDeck";
        hideOrShowSelect(false);
    }
    
    function hideOrShowSelect(v)
    {
        var allselect = document.getElementsByTagName("select");
        for (var i=0; i<allselect.length; i++)
        {
            //allselect[i].style.visibility = (v==true)?"hidden":"visible";
            allselect[i].disabled =(v==true)?"disabled":"";
        }
    }
    
    function adjustLocation()
    {
        var obox=document.getElementById('divBox');
        if (obox !=null && obox.style.display !="none")
        {
            var w=368;
            var h=129;
            var oLeft,oTop;
            
            if (window.innerWidth)
            {
                oLeft=window.pageXOffset+(window.innerWidth-w)/2 +"px";
                oTop=window.pageYOffset+(window.innerHeight-h)/2 +"px";
            }
            else
            {
                var dde=document.documentElement;
                oLeft=dde.scrollLeft+(dde.offsetWidth-w)/2 +"px";
                oTop=dde.scrollTop+(dde.offsetHeight-h)/2 +"px";
            }
            
            obox.style.left=oLeft;
            obox.style.top=oTop;
        }
    }
    
</script>

</head>

<body onresize="adjustLocation();">
    <input type="button" value="click me" onclick="showDlg();" size="10px" /><br/>
    <input type="text" value="" size="10px" /><a href="http://www.baidu.com" target="_blank">百度</a><br/>
    <select>
        <option selected="selected">1</option>
        <option>2</option>
    </select><br/>
    
    <div id="divBox" class="hideDlg" style="" >
            <table width="100%" style="height:100%;  100%;" id="table1">
                    <tr>
                        <td style="height: 20px; text-align: center;" colspan="3">请输入用户名及密码</td>
                    </tr>
                    <tr>
                        <td>用户名</td>
                        <td>
                            <input name="TextBox1" type="text" id="TextBox1" />
                        </td>
                        <td></td>
                    </tr>
                    <tr>
                        <td>密码</td>
                        <td>
                            <input name="TextBox2" type="text" id="TextBox2" /></td>
                        <td></td>
                    </tr>
                    <tr>
                        <td></td>
                        <td>
                            <input type="button" name="Button1" value="Login" id="Button1" size="10" onclick="alert(TextBox1.value)"/>&nbsp;&nbsp;
                            <input type="button" name="Button2" value="Cancel" id="Button2" size="10" onclick="cancel();" />
                            </td>
                        <td>&nbsp;</td>
                    </tr>
            </table>
    </div>

</body>
</html>
原文地址:https://www.cnblogs.com/xiangzhong/p/2619254.html