function calculateee() 
{
	/*calories = 0.0175 x weight x MET x time in minutes/30*/

	var weight, duration, calories, met;
	var metvalue;
	
	weight = document.getElementById("eeweight");
	duration = document.getElementById("eeduration");
	met = document.getElementById("selactivity");
	calories = document.getElementById("eecalories");	

	metvalue = met.options[met.selectedIndex].value;

	if (weight.value)
	{
		if (isNaN(weight.value) || weight.value < 0 || weight.value > 600)
		{
			alert("Please enter a weight in kilograms (kg).");
			weight.focus();
		}
		else
		{
			if (duration.value)
			{
				if(isNaN(duration.value) || duration.value < 0 || duration.value > 1440)
				{
					alert("Please enter the duration in minutes.");
					duration.focus();
				}
				else
				{
					if (metvalue)
					{
						if(isNaN(metvalue) || metvalue < 0 || metvalue > 20)
						{
							alert("Please choose an activity.");
						}
						else
						{
							var floatcalories = new Number();
							var floatweight = new Number(weight.value);
							var floatduration = new Number(duration.value);
							var floatmet = new Number(metvalue);
							floatweight = floatweight.toFixed(2);
							floatduration = floatduration.toFixed(2);
							floatmet = floatmet.toFixed(2);
							floatcalories = 0.0175 * floatweight * floatmet * floatduration;
							floatcalories = floatcalories.toFixed(2);
							calories.value = floatcalories;
							window.open("RecordCalcResults.asp?ans=energy&ans=" + floatweight + "&ans=" + floatduration + "&ans=" + floatmet, "", "width=50,height=50");
						}
					}
					else
					{
						alert("Please choose an activity.");
					}				
				}
			}
			else
			{
				alert("Please enter the duration in minutes.");
				duration.focus();
			}
		}
	}
	else
	{
		alert("Please enter a weight in kilograms (kg).");
		weight.focus();
	}




	return false;
}