can anyone suggest me for a round corners text area box either in javascript or in css
A "classic" way to do this, is using a background-image on a div around the textarea and setting border/outline of the textarea to none, like this:
<div style="background-image: url(image/with/rounded/corners.png);">
<textarea style="border: none; outline: none;">
</textarea>
</div>
CSS3 supports rounded corners, but that is not well supported, see e.g. http://www.css3.info/preview/rounded-border/
I use jQuery Corner. It applies css3 corners to the browsers that support them and draws corners for the browsers that don't (IE).
Hey,
Rounded corners could be done with Rico: http://juixe.com/techknow/index.php/2006/08/10/rounded-corners-with-rico/, a JS library in addition to the JQuery plugin mentioned in the other post.
Or, you can do rounded corners with teh AjaxControlToolkit RoundedCornersExtender: http://www.asp.net/AJAX/AjaxControlToolkit/Samples/RoundedCorners/RoundedCorners.aspx