function calculate_bmi(feet, inches, lbs){
	//var feet = document.form_bmi.feet.value; //user's inputted height for feet
	//var inches = document.form_bmi.inches.value; //user's inputted height for inches
	//var lbs = document.form_bmi.lbs.value; //user's inputted weight in pounds
	feet = parseInt(feet);
	inches = parseInt(inches);
	var height = (feet*12) + inches; //height in inches
	var bmi = (lbs/(height*height))*703;
	bmi = Math.round((bmi*10))/10;
	
	if (height > 0){
		document.getElementById('BMIRESULT').value = bmi;
	}
	
	else{
		//document.form_bmi.feet.value= "";
		//document.form_bmi.inches.value= "";
		//document.form_bmi.lbs.value= "";
		//document.form_bmi.result.value="";
		//Resets values
		alert("Please enter your height in feet and inches and your weight in pounds.");
	}
}

function calculate_sinusitis(pressure, headache, congestion, discharge, fever, breath, teeth){
//	var pressure = document.form_sinusitis.pressure.value; // 1 for yes, 0 for no
//	var headache = document.form_sinusitis.headache.value; 
//	var congestion = document.form_sinusitis.congestion.value; 
//	var discharge = document.form_sinusitis.discharge.value; 
//	var fever = document.form_sinusitis.fever.value; 
//	var breath = document.form_sinusitis.breath.value; 
//	var teeth = document.form_sinusitis.teeth.value; 
	
	var total = 0;
	
	if (pressure == 1){
		total = total + 1;
	}
	
	if (headache == 1){
		total = total + 1;
	}
	
	if (congestion == 1){
		total = total + 1;
	}
	
	if (discharge == 1){
		total = total + 1;
	}
	
	if (fever == 1){
		total = total + 1;
	}
	
	if (breath == 1){
		total = total + 1;
	}
	
	if (teeth == 1){
		total = total + 1;
	}
	
	//document.form_sinusitis.total.value = total;
	return total;
}

function calculate_duedate(month, day, year){
//	var month = document.form_duedate.month.value; //user's inputted month
//	var day = document.form_duedate.day.value; //user's inputted day of month
//	var year = document.form_duedate.year.value; //user's inputted year
	
	year = parseInt(year);
	day = parseInt(day);
	month = parseInt(month);
	
	var  days_in_month = new Array(12);
	days_in_month[0] = 31; //January
	days_in_month[1] = 28; //February
	days_in_month[2] = 31; //March ..
	days_in_month[3] = 30;
	days_in_month[4] = 31;
	days_in_month[5] = 30;
	days_in_month[6] = 31;
	days_in_month[7] = 31;
	days_in_month[8] = 30;
	days_in_month[9] = 31;
	days_in_month[10] = 30;
	days_in_month[11] = 31;
	var name_of_month;
	
	switch(month){
		case 0:
			current_month = days_in_month[0];
			break;
		case 1:
			current_month = days_in_month[1];
			break;
		case 2: 
			current_month = days_in_month[2];
			break;
		case 3: 
			current_month = days_in_month[3];
			break;
		case 4: 
			current_month = days_in_month[4];
			break;			
		case 5: 
			current_month = days_in_month[5];
			break;			
		case 6:
			current_month = days_in_month[6];
			break;			
		case 7:
			current_month = days_in_month[7];
			break;
		case 8:
			current_month = days_in_month[8];
			break;			
		case 9:
			current_month = days_in_month[9];
			break;			
		case 10:
			current_month = days_in_month[10];
			break;			
		default:
			current_month = days_in_month[11];
			break;
	}			

	var dueday = day; // calculated due day of delivery
	var dueyear = year; // calculated due year of delivery
	var pointer = month; //points to current month
	
	for (var z=0; z < 280; z++){
		dueday++; // increments due day
		if (dueday > days_in_month[pointer]){
			dueday = 1;
			pointer++;
		}		
		else if (dueday == days_in_month[pointer] + 1){
			dueday = 1;
			pointer++;
		}

		if (pointer > 11){
			dueyear++;
			pointer = 0;
		}
	}
	switch(pointer){
		case 0:
			name_of_month = "January";
			break;
		case 1:
			name_of_month = "February";
			break;
		case 2: 
			name_of_month = "March";
			break;
		case 3: 
			name_of_month = "April";
			break;
		case 4: 
			name_of_month = "May";
			break;			
		case 5: 
			name_of_month = "June";
			break;			
		case 6:
			name_of_month = "July";
			break;			
		case 7:
			name_of_month = "August";
			break;
		case 8:
			name_of_month = "September";
			break;			
		case 9:
			name_of_month = "October";
			break;			
		case 10:
			name_of_month = "November";
			break;			
		default:
			name_of_month = "December";
			break;
	}
	document.getElementById('dueday').value = dueday;
	document.getElementById('duemonth').value = name_of_month;
	document.getElementById('dueyear').value = dueyear;
}

function calculate_sleepiness(sitting, tv, inactive, passenger, lyingdown, talking, quietly, car){
//	var sitting = document.form_sleepiness.sitting.value; 
//	var tv = document.form_sleepiness.tv.value; 
//	var inactive = document.form_sleepiness.inactive.value; 
//	var passenger = document.form_sleepiness.passenger.value;
//	var lyingdown = document.form_sleepiness.lyingdown.value; 
//	var talking = document.form_sleepiness.talking.value; 
//	var quietly = document.form_sleepiness.quietly.value; 
//	var car = document.form_sleepiness.car.value; 
	var total = 0;
	
	switch(sitting){
		case "0":
			total = total + 0;
			break;
		case "1":
			total = total + 1;
			break;
		case "2": 
			total = total + 2;
			break;
		default:
			total = total + 3;
			break;
	}
	
	switch(tv){
		case "0":
			total = total + 0;
			break;
		case "1":
			total = total + 1;
			break;
		case "2": 
			total = total + 2;
			break;
		default:
			total = total + 3;
			break;
	}
	
	switch(inactive){
		case "0":
			total = total + 0;
			break;
		case "1":
			total = total + 1;
			break;
		case "2": 
			total = total + 2;
			break;
		default:
			total = total + 3;
			break;
	}
	
	switch(passenger){
		case "0":
			total = total + 0;
			break;
		case "1":
			total = total + 1;
			break;
		case "2": 
			total = total + 2;
			break;
		default:
			total = total + 3;
			break;
	}
	
	switch(lyingdown){
		case "0":
			total = total + 0;
			break;
		case "1":
			total = total + 1;
			break;
		case "2": 
			total = total + 2;
			break;
		default:
			total = total + 3;
			break;
	}
	
	switch(talking){
		case "0":
			total = total + 0;
			break;
		case "1":
			total = total + 1;
			break;
		case "2": 
			total = total + 2;
			break;
		default:
			total = total + 3;
			break;
	}
	
	switch(quietly){
		case "0":
			total = total + 0;
			break;
		case "1":
			total = total + 1;
			break;
		case "2": 
			total = total + 2;
			break;
		default:
			total = total + 3;
			break;
	}
	
	switch(car){
		case "0":
			total = total + 0;
			break;
		case "1":
			total = total + 1;
			break;
		case "2": 
			total = total + 2;
			break;
		default:
			total = total + 3;
			break;
	}
	
	return total;
}