function PTRamount(d,h){
			
		var WrkTable=document.getElementById("PTRamountText");
		WrkTable.style.visibility="visible";	
		
		var amountr = 0;
		
	   amountr = getAmountr(d,h);
      
		WrkTable.value = "Yow Will Need  " + amountr +  "  Lbs. Of Glass " ;
	
	}
	
	function getAmountr(d,h) {
		
		var amountr=0;
		var baser =0;

        hn = h - 0;
		dn = d - 0;

		r = dn/2;

		baser = (r * r * 3.14) * hn ;
		
		amountr = (Math.round(baser/ 80));

		return amountr;
	}

function PTLamount(d){
			
		var WrkTable=document.getElementById("PTLamountText");
		WrkTable.style.visibility="visible";	
		
		var amountl = 0;
		
	   amountl = getAmountl(d);
      
		WrkTable.value = "You Will Need  " + amountl +  "  Lbs. Of Glass " ;
	
	}
	
	function getAmountl(d) {
		
		var amountl=0;
		var basel =0;

        dn = d - 0;

		basel = (dn * dn * 2) / 231;
		//basel = basel * .8;
		amountl = (Math.round(basel * 12));
		return amountl;
	}

function FpAmount(b,f,d,t) {
			
		var WrkTable=document.getElementById("FPamountText");
		WrkTable.style.visibility="visible";	
		
		var amount = 0;
		var a =0;
		var base =0;

		
	   amount = getAmount(b,f,d,t);
      
		WrkTable.value = "You will need " + amount + " Lbs. Of Glass" ;
	
	}

	
function getAmount(b,f,d,t) {
		
		var amount=0;
		var base =0;
		var abase =0;
		
        bn = b - 0;
        fn = f - 0;
		dn = d - 0;
		tn = t - 0;

        abase = (bn + fn)/2 ; 
		amount = (abase * dn * tn) / 30;
		amount = (Math.round(amount * 1));

	
		return amount;
	}