function calcgpa(form){
            var hoursEarned= form.elements['val1'].value;
            var pointsEarned= form.elements['val2'].value;
            var current= form.elements['val3'].value;
          
            var gpa= ( Number(pointsEarned)/ Number(hoursEarned));
            var req= ( Number(current) + Number(hoursEarned))*2;
            var sem= ( (Number(req) - Number(pointsEarned)) /  Number(current));
            
           form.elements['gpa'].value= (gpa.toFixed(2));
           form.elements['req'].value= (req.toFixed(2));
           form.elements['sem'].value= (sem.toFixed(2));
        }