John's IP Address Calculator

Here is a quick'n'dirty IP address calculator.  I put it here so I could easily get to it when I need to double check my math.  You may find it useful, too.

WARNING!  There is absolutely no error checking in this script.  If you type in something off the wall there is no telling what the script might do.

IP Address:	. . . X /0 /1 /2 /3 /4 /5 /6 /7 /8 /9 /10 /11 /12 /13 /14 /15 /16 /17 /18 /19 /20 /21 /22 /23 /24 /25 /26 /27 /28 /29 /30 /31 /32
Subnet Mask:	. . .
Network Address:	. . .
Broadcast Address:	. . .