function CalcArea(ObjID, ObjType)
{
ObjWidth = 'Width' + ObjID;
ObjLength = 'Length' + ObjID;
ObjArea = 'Area' + ObjID;
if(ObjType != "Area" && ObjType != "Diameter" && ObjType != "AreaDiameter")
{
	Width = 0;
	Length = 0;
	
	if(isNaN(document.getElementById(ObjWidth).value) == true)
	{
	document.getElementById(ObjWidth).style.background = '#FFCCCD';
	}
	else
	{
	document.getElementById(ObjWidth).style.background = '#FFFFFF';
	Width = eval(document.getElementById(ObjWidth).value);
	}
	
	if(isNaN(document.getElementById(ObjLength).value) == true)
	{
	document.getElementById(ObjLength).style.background = '#FFCCCD';
	}
	else
	{
	document.getElementById(ObjLength).style.background = '#FFFFFF';
	Length = eval(document.getElementById(ObjLength).value);
	}
	
	if(Width != undefined && Length != undefined)
	{
	document.getElementById(ObjArea).value = Width * Length;
	}
}
else if(ObjType == "Area")
{
	document.getElementById(ObjWidth).value = "";
	document.getElementById(ObjLength).value = "";
}
else if(ObjType == "AreaDiameter")
{
	document.getElementById(ObjDiameter).value = "";
}

if(ObjType == "Diameter")
{
	ObjDiameter = 'Diameter' + ObjID;
	ObjArea = 'Area' + ObjID;

	if(isNaN(document.getElementById(ObjDiameter).value) == true)
	{
	document.getElementById(ObjDiameter).style.background = '#FFCCCD';
	}
	else
	{
	document.getElementById(ObjDiameter).style.background = '#FFFFFF';
	}

	Radius = document.getElementById(ObjDiameter).value / 2;
	Radius = Radius * Radius;
	Radius = Radius * 3.1416;
	Radius = Math.round(Radius);
	document.getElementById(ObjArea).value = Radius;
}

Area1 = document.getElementById("Area1").value;
Area2 = document.getElementById("Area2").value;
Area3 = document.getElementById("Area3").value;
Area4 = document.getElementById("Area4").value;
Area5 = document.getElementById("Area5").value;
Area6 = document.getElementById("Area6").value;

if(isNaN(Area1) == true || Area1 == "")
{
Area1 = 0;
}

if(isNaN(Area2) == true || Area2 == "")
{
Area2 = 0;
}

if(isNaN(Area3) == true || Area3 == "")
{
Area3 = 0;
}

if(isNaN(Area4) == true || Area4 == "")
{
Area4 = 0;
}

if(isNaN(Area5) == true || Area5 == "")
{
Area5 = 0;
}

if(isNaN(Area6) == true || Area6 == "")
{
Area6 = 0;
}

TotalArea = parseInt(Area1) + parseInt(Area2) + parseInt(Area3) + parseInt(Area4) + parseInt(Area5) + parseInt(Area6);
document.getElementById("TotalArea").value = TotalArea;

Depth = document.getElementById("Depth").value;
MulchReq = ((TotalArea * Depth) / 12) / 27;
MulchReq = Math.round(MulchReq * Math.pow(10,1)) / Math.pow(10,1);
document.getElementById("Mulch").value = MulchReq;
document.getElementById("Suggested").value = Math.ceil(MulchReq);
}