RadGrid PopUp Centered

[Alexandre Lepage]

Good Morning,

How can I center a PopUp form in a browser window.

I saw the script sample provided in the documentation... but it centered the window according to the grid position in the page.
What I want is center base on the browser window, not the content. Like a Radwindow if I can say

Thanks!

[Alexandre Lepage]

got it from another post

<telerik:RadCodeBlock ID="RadCodeBlock1" runat="server">
<script type="text/javascript">
   var popUp;
   function PopUpShowing(sender, eventArgs)
   {
       var popUp = eventArgs.get_popUp();
       var popUpWidth = popUp.style.width.substr(0, popUp.style.width.indexOf("px"));
       var popUpHeight = popUp.style.height.substr(0, popUp.style.height.indexOf("px"));
       var windowHeight = (typeof window.innerHeight != 'undefined' ? window.innerHeight : document.body.offsetHeight);
       var windowWidth = document.body.offsetWidth;

       if (popUpHeight == "") popUpHeight = 300; // if the height isn't set on the popup, default to 300px
       popUp.style.position = "fixed";
       popUp.style.left = (Math.floor((windowWidth - popUpWidth) / 2)).toString() + "px";
       popUp.style.top = (Math.floor((windowHeight - popUpHeight) / 2)).toString() + "px";
   }
   </script>
</telerik:RadCodeBlock>