function updateFormFields() {
	
	var twofivecard 		= document.getElementById('twofive').value;
	var fivezerocard 		= document.getElementById('fivezero').value;
	var quantity			= (Number(twofivecard) + Number(fivezerocard));
	
	if (twofivecard <= 0 && fivezerocard <= 0) {
		
		document.getElementById('cardTotal').innerHTML = "$0.00";
		alert("You must select at least one card to purchase.");
		
	}
	else {
		
		var twofivetotal 	= Number(twofivecard) * Number(25.00);
		var fivezerototal	= Number(fivezerocard) * Number(50.00);
		
		var cardTotal		= Number(twofivetotal) + Number(fivezerototal);
		document.getElementById('cardTotal').innerHTML = "$"+(cardTotal.toFixed(2));
		
		document.getElementById('name').value 		= "$"+(cardTotal.toFixed(2))+" Floyd's 99 Barbershop Gift Certificate[#NOSHIP#][NOTAX]";
		document.getElementById('price').value		= (cardTotal.toFixed(2));
		document.getElementById('quantity').value	= quantity;
		
	}
	
}

/*********************************************
	ALLOW ONLY NUMBERS IN FORM FIELD
/*********************************************/
function numbersonly(myfield, e, dec)
{
var key;
var keychar;

if (window.event)
   key = window.event.keyCode;
else if (e)
   key = e.which;
else
   return true;
keychar = String.fromCharCode(key);

// control keys
if ((key==null) || (key==0) || (key==8) || 
    (key==9) || (key==13) || (key==27) )
   return true;

// numbers
else if ((("0123456789").indexOf(keychar) > -1))
   return true;

// decimal point jump
else if (dec && (keychar == "."))
   {
   myfield.form.elements[dec].focus();
   return false;
   }
else
   return false;
}