To All

On my HTML page is some edit boxes with text in it which represents 
durations in time in the following format: hh:mm:ss.

I have to work with these pre-entered values and have a total field named 
TotTTimes which is added up from 3 fields called TotBTime, TotPTime, 
TotUTime.  

The value of these three fields (TotBTime, TotPTime, TotUTime) are 
recalculated depending on selections made by the user.

When the user selects B (via a radio button) on the first line, the value 
of one of the above mentioned 3 fields changes.  i.e. on the first row U 
was selected.  Now he/she selects B.  The value of the TimeOne edit box 
(pre-entered and not editable) has to be subtracted from TotUTime and 
added to TotBTime. 

I have no problem with the actual calculation code.  What is creating a 
problem is the calculation reads the value of all the edit boxes as 
strings.  I can not use parseInt(TimeOne.value) or even parseFloat
(TimeOne.value).

What must I use or how can I convert the data in the textbox to time 
format?

Your assistance will highly be appreciated.

Helga Y. Anagnostopoulos