input内文字点击消失 弹出层，可以写表单

<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>设计师内容页</title>
</head>
<body>  

<input name="" type="text" onfocus="if(this.value=='请输入邮箱地址，以便收到编辑的回复') {this.value='';}" onblur="if(this.value=='') {this.value='请输入邮箱地址，以便收到编辑的回复';}" value="请输入邮箱地址，以便收到编辑的回复" />
<textarea name="" rows="" onfocus="if(value=='如果您遇到任何有关服装的问题都可以在此提问') {value=''}" onblur="if(value=='') {value='如果您遇到任何有关服装的问题都可以在此提问'}">如果您遇到任何有关服装的问题都可以在此提问</textarea>  

</body>
</html>  

弹出层，可以写表单

<link href="http://www.dazhongw.com/css/css.css" rel="stylesheet" type="text/css" />
<SCRIPT src="http://www.dazhongw.com/js/jquery.min.js"></SCRIPT>  

<script language="javascript" type="text/javascript">
function showDiv(){
$("#zxgs").attr('value',$("#gsmc").text());
$("#ly").attr('value',$("#xxly").text());
document.getElementById('popDiv').style.display='block';
document.getElementById('popIframe').style.display='block';
document.getElementById('bg').style.display='block';
}
function closeDiv(){
document.getElementById('popDiv').style.display='none';
document.getElementById('bg').style.display='none';
document.getElementById('popIframe').style.display='none';
}
</script>  

<script language="javascript">
function checkkey(){
    if(form2.realname.value=='请填写您的真实姓名')
    {
        alert("请填写您的真实姓名!");
        form2.realname.focus();
        return false;
    }
    if(form2.mobile.value=='请输入您的手机号')
    {
        alert("请输入您的手机号!");
        form2.mobile.focus();
        return false;
    }
    return true;
}
</script>
<script language="javascript">
    function clearDefaultText2(el2, message2) {
        var obj2 = el2;
        if (typeof (el2) == "string")
            obj2 = document.getElementById("mobile");
        if (obj2.value == message2) {
            obj2.value = "";
        }
        obj2.onblur = function() {
            if (obj2.value == "") {
                obj2.value = message2;
            }
        }
    }
</script>  

<script language="javascript">
    function clearDefaultText(el, message) {
        var obj = el;
        if (typeof (el) == "string")
            obj = document.getElementById("realname");
        if (obj.value == message) {
            obj.value = "";
        }
        obj.onblur = function() {
            if (obj.value == "") {
                obj.value = message;
            }
        }
    }
</script>
<div id="popDiv" class="mydiv" style="display:none;">
<h4><span>免费预约</span><a href="javascript:closeDiv()">X 关闭</a></h4>
王gg
</div>
<div id="bg" class="bg" style="display:none;"></div>
<iframe id='popIframe' class='popIframe' frameborder='' ></iframe>
<a href="javascript:showDiv()">open</a>
<a href="javascript:showDiv()">open</a>
<a href="javascript:showDiv()">open</a>
<a href="javascript:showDiv()">open</a>
<a href="javascript:showDiv()">open</a>
<a href="javascript:showDiv()">open</a>
<a href="javascript:showDiv()">open</a>
<a href="javascript:showDiv()">open</a>
<a href="javascript:showDiv()">open</a>
<a href="javascript:showDiv()">open</a>
<a href="javascript:showDiv()">open</a>