Copyright violation
Please check out
http://sqljunkies.com/Article/F5783CE9-BA74-4657-BF9D-1139BCC3096B.scuk
Srinivas Sampath originally posted this UDF in the above link. Please either remove this post or give proper credit.
Give me a fish, you feed me for a day! Teach me to fish, you feed me for a life time.