nested variable and if then... try this

Code:
second var byte
minute var byte
hours  var byte
day    var word
year   var byte
clear

disable
Myint:
    IF INTCON.1=1 Then
       if second<60 then
          second=second+1
       else
          second=0
          if minute<60 then
             minute = minute + 1
          else 
             minute = 0
             if hours < 24 then
                hours = hours + 1
             else
                hours = 0
                if day<365 then
                   day=day+1
                else
                   day = 0
                   year = year + 1
                endif
             endif
          endif
       endif
    endif
enable