Your mission is to make a flight planner.

Ask for:
	* How much fuel (decimal, in hours)
	* How far is the flight (integer, in miles)
	* How fast is the plane (integer, in miles per hour)
	* Is it VFR or IFR (radio buttons)

Compute 
	Estimated fuel at arrival

Show
	* Estimated fuel at arrival
	* If the plane has enough fuel plus reserve, show a happy background
	* If the plane has enough fuel without suffecient reserve, show a worried background
	* If the plane does not have enough fuel, show a scary background

Points:
	One point for each * above
	One point if you use HTML to verify the reasonableness of an input
	One point if you use Javascript to verify the reasonableness of an input
	One point if you use PHP to verify the reasonableness of an input
	That means both 
		is it a number
		is it within reasonable bounds

Due:
	Thr Sep 15th at 4pm