Tested in: Firefox, Internet Explorer, Netscape, Opera

• REQUIRES Cold Fusion 5.0 or MX to run
• Uses "CreateTimeSpan" to translate both start time and time span into minutes.  That way only a simple addition is required to determine end time.
• "TimeFormat" is then used to return the start time and end time back to a HH:MM based time format.
• Several of the "TimeFormat" formatting options are provided with this script.
• Page "actions" back to itself, therefore, "cfparam" is required to setup two default parameters (RequestTimeStart, RequestTimeAmount) for initial page load.

<!--- Functions to determine end time --->
<cfset x=CreateTimeSpan(0, 0, RequestTimeStart, 0)>
<cfset y=CreateTimeSpan(0, 0, RequestTimeAmount, 0)>
<cfset z=x+y>

Within the parenthesis of the CreateTimeSpan, the variables (gathered from the above form set as minutes) are placed in the "minutes" spot.  "x" is the start time in minutes.  "y" is the time span in minutes.  Adding these together give a total minutes for end time.

Note: if the end time is past 12:00 am then it is obviously the next day, but the function still works fine.  Additional code is required to calculate whether the end time is in the next day or not if required.

To get the values in an HH:MM format, TimeFormat is used accordingly.