# Window size

**URL:** <https://www.ruby-forum.com/t/window-size/154713>\
**Category:** Rails\
**Created:** [December 3, 2008, 6:50am UTC](https://www.ruby-forum.com/t/window-size/154713 "2008-12-03T06:50:07Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![newb](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/n/2acd7d/32.png) [@newb](https://www.ruby-forum.com/u/newb)\
**Post date:** [December 3, 2008, 6:50am UTC](https://www.ruby-forum.com/t/window-size/154713/1 "2008-12-03T06:50:07Z")

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I hope someone could help me on my problem.  
I want to show my div(User Add Form) at center of the browser  
window.like pop up window.the Pop-Up has to be shown at center of the  
browser’s window  
I used this code.In FireFox 3.  
element.style.top = ( 0 + ( window.innerHeight )/2 - ( dimensions.height  
)/2 ) + ‘px’;  
element.style.left = ( window.innerWidth )/2 - ( dimensions.width )/2 +  
‘px’;  
but it was not positioned center.  
Pls help me up.

---

<div class="post-metadata">

**Author:** ![newb](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/n/2acd7d/32.png) [@newb](https://www.ruby-forum.com/u/newb)\
**Post date:** [December 3, 2008, 7:33am UTC](https://www.ruby-forum.com/t/window-size/154713/2 "2008-12-03T07:33:11Z")

</div>

## This is not a rails question. Please ask it elsewhere.

Ryan B.  
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