function processSquareInchData(inControl1, inControl2, inControl3){

if (inControl1.value == "" || inControl1.value == null){	
	return 0;
}

if (inControl2.value == "" || inControl2.value == null){	
	return 0;		
}

var value1 = parseInt(inControl1.value);
var value2 = parseInt(inControl2.value);

inControl3.value = (value1 * value2);

}

function calculateTotalCoverage(inControl1, inControl2, inControl3,inTotalAreaControl){

if (inControl1.value == "" || inControl1.value == null){	
	return 0;
}

if (inControl2.value == "" || inControl2.value == null){	
	return 0;		
}

if (inTotalAreaControl.value == "" || inTotalAreaControl.value == null)
{
	return 0;
	
}
var side1 = parseFloat(inControl1.value);
var side2 = parseFloat(inControl2.value);
var totalarea = parseFloat(inTotalAreaControl.value);

var temp1;
var temp2;

temp1 = ((side1 * .01) * totalarea);
temp2 = ((side2 * .01) * totalarea);

inControl3.value = (temp1 + temp2);

}

function calculateEstimatedInkNeeded(inDropDown, inTotalCoverage, inEstimatedSheets, inAnswer)
{


if (inDropDown.value == "" || inDropDown.value == null){	
	return 0;
}

if (inTotalCoverage.value == "" || inTotalCoverage.value == null){	
	return 0;
}

if (inEstimatedSheets.value == "" || inEstimatedSheets.value == null){	
	return 0;
}

var inputcode = parseFloat(inDropDown.value);
var totalcoverage = parseFloat(inTotalCoverage.value);
var estimatedsheets = parseFloat(inEstimatedSheets.value);

var amountperthousandsheets = totalcoverage / inputcode;

inAnswer.value = amountperthousandsheets * estimatedsheets;


}