function ValidateNumber(e, object) {
	var code;
	if (!e) { var e = window.event; }
	if (e.keyCode)
	{
		if ((e.keyCode < 58) || ( (e.keyCode > 94) && (e.keyCode < 106) ) )  {
			
		} else {
			object.value = object.value.substring(0, (object.value.length - 1));
		}
	}
	else if (e.which)
	{
		if ((e.which < 58) || ( (e.which > 94) && (e.which < 106) ) )  {
			
		} else {
			object.value = object.value.substring(0, (object.value.length - 1));
		}
	}
}

function DisableInput(e) {
	if (e.keyCode) { e.keyCode = 0; }
}

function ClearForm() {
	var formobject = document.solariscalculator;
	formobject.roomwidth.value = "1000";
	formobject.roomdepth.value = "1000";
	formobject.roomtype.options[0].selected = true;
	formobject.totalwattage.value = "75";
}

function CalculateWattage() {
	var formobject = document.solariscalculator;
	var roomwidth = formobject.roomwidth.value;
	var roomdepth = formobject.roomdepth.value;
	var roomtype = formobject.roomtype.value;
	var totalwattage = Math.round((((roomwidth / 100) * (roomdepth / 100)) * roomtype) / 100);
	formobject.totalwattage.value = totalwattage;
}