[jQuery] jquery and math functions

[Vlad Mazek]

Is there something special that needs to be done to values selected with
jQuery so math functions can work on them? parseInt or something? I am not
sure, but all my calculations are getting NaN. For example, I have the
following function that always produces NaN:

            var startmin = $("#timestartmin");
            var stopmin = $("#timestopmin");

            var totaltime = startmin - stopmin;
            $("#totaltime").val(totaltime); }

I've tried adding .val to the first two lines, I've tried parseInt to
separate temp variables, I just keep on getting NaN even though it is
pulling numbers from the two fields. Any ideas?

-Vlad