Mondor MS Captcha Issue with Captcha image width

Hi, 

I have downloaded your captcha code from asp snippets from the below URL. : 

http://www.aspsnippets.com/Articles/How-to-implement-Captcha-in-ASP.Net.aspx

But, the Captcha Image width gets increased when I use it in my application. I tried checking from where the Image was taking style from. But It was coming dynamically.

Is there any way out for this solution. Please help