function enable(id){
	document.getElementById(id).disabled = false;
}


function set(id,value){
	//enable(id);
	document.getElementById(id).value = value;
}

function hide(id){
	document.getElementById(id).style.visibility='hidden';
}

function show(id){
	document.getElementById(id).style.visibility='visible';
}

function enableRoyalty(){
	document.getElementById('calc2').style.visibility='visible';
	document.getElementById('retail').disabled = false;
}