// JavaScript Document
function showHide(frm)
{
if (frm.isDoor(0).status==true)
	{	document.getElementById("showExtras").style.display="";	}
else
	{	document.getElementById("showExtras").style.display="none";	}
}

function showResults(v1)
{	
	if (v1.length==0)
	
	if (document.getElementById("sizes").value=="Select Size" || document.getElementById("sizes").value.length<=0)
	{
		alert ("Select a size please");
		return false;
	}
	else
	{	
		calculate();	
		document.getElementById("Results").style.display="";
	}
	

}

function calculate()
{
if (document.getElementById("sizes").value=="Select Size" || document.getElementById("sizes").value.length<=0)
{
	alert ("Select a size please");
	return false;
}

if (document.getElementById("SLength").value.length<=0 || document.getElementById("SWidth").value.length<=0)
{
	alert ("Enter a valid numeric value in Height/Width");
	return false;
}

if (document.getElementById("sizes").value=="Select Size")
{
	alert ("Select a size please");
	return false;
}



	var SLength=document.getElementById("SLength").value;
	var SWidth=document.getElementById("SWidth").value;
	document.getElementById("ar_feet").value = parseFloat(SLength)*parseFloat(SWidth);
	document.getElementById("ar_mtr").value = Math.round((parseFloat(SLength)*parseFloat(SWidth))/(3.28*3.28),3);
	var tileSize = document.getElementById("sizes").value;
	if (tileSize.indexOf("mm")>0) tileSize = tileSize.substr(0,tileSize.indexOf("mm"));
	tileCoords=tileSize.split("x");
	sLength=SLength*304.8;
	sWidth=SWidth*304.8;
	var doorSize, winSize;

	var TileArea = (parseFloat(sLength)*parseFloat(sWidth));

	if(document.getElementById("isDoor").checked)
	{
		if(document.getElementById("winHeight").value.length>0)
		{
			winSize = (parseFloat(document.getElementById("winHeight").value)*304.8) * (parseFloat(document.getElementById("winWidth").value)*304.8)
			TileArea = parseFloat(TileArea) - parseFloat(winSize);
		}
		if(document.getElementById("doorHeight").value.length>0)
		{
			doorSize = (parseFloat(document.getElementById("doorHeight").value)*304.8) * (parseFloat(document.getElementById("doorWidth").value)*304.8)
			TileArea = parseFloat(TileArea) - parseFloat(doorSize);
		}
	} 
	xVal=document.getElementById("sizes").value;
	yVal=document.getElementById("sizes2").value;

	var tileSize = (parseFloat(xVal) * parseFloat(yVal));
	var TotalTilesRequired = TileArea/tileSize;
	if ((TotalTilesRequired-Math.round(TotalTilesRequired))>0) 
		TotalTilesRequired=Math.round(TotalTilesRequired)+1;
	else
		TotalTilesRequired=Math.round(TotalTilesRequired,0);
	document.getElementById("TotalTiles").value = TotalTilesRequired;
}