Julian date time Conversion

Can anyone tell me how to convert julian date time to DateTime and Vice Versa?
the function which I have only convers the date to Julian and julian to date but the time is not appended.
How can i get the time into Julian format and from julian format?
Any help would be appreciated.
thanks.If you poke around the source forthis page, you'll find the JavaScript that they use to do it.
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Try the links below for UDF Julian to DateTime conversion code. Hope this helps.
http://www.novicksoftware.com/udfofweek/Vol2/T-SQL-UDF-Vol-2-Num-3-udf_DT_FromJulian.htm

http://www.novicksoftware.com/udfofweek/Vol2/T-SQL-UDF-Vol-2-Num-2-udf_DT_ToJulian.htm