// JavaScript Document

<!--
function userfocus() {
  document.sqft.xInput.focus() }

function c_compute(){
  varA=0 ;
  varB=0 ;

if (sqft.unitMeasure.value == "centimetre") {
yLength = (sqft.yInput.value * 0.01) ;
xWidth = (sqft.xInput.value * 0.01) ;
}

else if (sqft.unitMeasure.value == "millimetre") {
yLength = (sqft.yInput.value * 0.001) ;
xWidth = (sqft.xInput.value * 0.001) ;
}

else if (sqft.unitMeasure.value == "inch") {
yLength = (sqft.yInput.value * 0.0254) ;
xWidth = (sqft.xInput.value * 0.0254) ;
}
else {
yLength = (sqft.yInput.value) ;
xWidth = (sqft.xInput.value) ;
}

if (sqft.packsize.value !='')
{
	packsize = (sqft.packsize.value);
}
	

if (sqft.xInput.value !='')
{
	if (sqft.yInput.value !='') {
		sqft.xyArea.value = (xWidth * yLength) ;
	}
}

  if (sqft.xyArea.value!=parseInt(sqft.xyArea.value,10)){ subTotal=parseInt(sqft.xyArea.value,10)+1; varB=varB+parseInt(sqft.xyArea.value,10)+1;}
  else { subTotal=sqft.xyArea.value; varB=varB+sqft.xyArea.value;}


plankLength = 1000 ;
plankWidth = 100 ;

if (plankWidth == 90) {
	if (plankLength == 1000) {
		varA = 0.99 ;
	}
}
else if (plankWidth == 170) {
	if (plankLength == 1000) {
		varA = 0.85 ;
	}
}
else if (plankWidth == 200) {
	if (plankLength == 1000) {
		varA = 1.00 ;
	}
}
else  {
varA = Error ;
}

Total = ((sqft.xyArea.value*(1+(parseInt(sqft.wasteSpares.value)/100)))/packsize) ;
  if (plankWidth!="") {
     numberBoxes= parseInt(Total/varA) ;
    if (numberBoxes!= Total/varA) {
      numberBoxes = parseInt(numberBoxes) +1 }
    sqft.wasteSpares.value=parseInt(sqft.wasteSpares.value)
persqm = ((numberBoxes * varA) * 100)/100 ;
sqft.total.value = Math.ceil(Total);
}
  else {
   numberBoxes = "" ;
   plankWidth = "" ; }
   }


// -->