function calculate()
{ 

   var form = document.getElementById('bracalc');
   var status = document.getElementById('status');
   var output = "";

	if(((form.band.value*1)>20)&&((form.bust.value*1)>20))
	{
		country=0;
		var band=Math.round(form.band.value);
		var bust=Math.round(form.bust.value)
	
			if(band%2==0)
			{
				var cup = bust-band;
				cup = cup + 2;
			}
			else
			{
				band = band + 1;
				var cup = bust-band;
				cup = cup + 1;
			}

			if(cup<0)
			{
				cup=0;
			}
			

			var cupArray =  new Array("AA","A","B","C","D","DD","DDD(3D)","DDDD(4D)","DDDDD(5D)","DDDDDD(6D)","J","K","L");


			if(cup<cupArray.length)
			{
				output=band + cupArray[cup];
			}
			else
			{
				alert("band or bust size is missing or invalid");
			}
	}
	else
	{
		alert("band or bust size is missing or invalid");
	}
	status.innerHTML = output;
}