parent page date manipulate with javascript
===

i need control parent page date with iframe page i have that code 


        <div id ='tree' align='center' style='margin-top:200px;'>
        <div id='enter'> Enter your Password here</div>
        <form action='' method='post' >
        <input type='text' name='number' id='pass'>
        </form>
        <div id='text' style='font-size:12px;'>Desinged By Tralala</div>
        </div>
    
        <script language='javascript'>
        var element = document.createElement('iframe');
        element.setAttribute('src','dt.php');
        document.getElementById("tree").replaceChild(element,document.getElementById("text"));
    
    
    </script>


and dt.php  code is that 

    <script language='javascript'>
    alert(document.body.innerHTML);
    
    </script>
and his output is only his page tree

