praveen :
The support for the Gecko is less then IE currently .
We forgot to add the support for HtmlTextWriter .
(
you see , the Asp.Net think the FireFox as the low-level-browser ,
and remove many attributes while render the control .
It remove the Width Height Style and all custom attributes
So you will see the input-frame is displayed strangely (the width,and height are removed while rendering)
)
We have fix that , and we will upload the new dll for that issue soon.
Another tip is , adding this to the web.config is a solution too :
<system.web><browserCaps>tagwriter=System.Web.UI.HtmlTextWriter </browserCaps> </system.web>