function convert(amount){
	cents = amount.toString();
	len = cents.length;
	if(len > 2){dollarsAndCents = cents.substring(0, len - 2) + "." + cents.substring(len - 2, len);}
	else{
		if(len == 2){dollarsAndCents = "0."  + cents ;}
		else{
			if(len == 1){dollarsAndCents = "0.0" + cents;}
			else{dollarsAndCents = "0.00";}
		}
	}
	return dollarsAndCents;
}

function calc(){
	if(document.membership.newRenew[0].checked == true){newRenew = "New";}
	if(document.membership.newRenew[1].checked == true){newRenew = "Renewal";}
	memnumber = document.membership.memnumber.value;
	if(memnumber){
		if(newRenew == "New"){document.transact.transRelationship.value = newRenew + " " + memnumber;}
		else{document.transact.transRelationship.value = memnumber;}
	}
	else{document.transact.transRelationship.value = newRenew;}
	sublevel = document.membership.memlevel[document.membership.memlevel.selectedIndex].value;
	if(sublevel > 0){
		switch(sublevel){
			case "100000": level = "Gold"; break;
			case "50000" : level = "Silver"; break;
			case "25000" : level = "Bronze"; break;
			default: level = ""; total = ""; break;
		}
		if(document.membership.senior.checked){senior = "Sr "; subsenior = sublevel * document.membership.senior.value;}
		else{senior = ""; subsenior = 0;}
		if(document.membership.subdonate.value > 0){subdonate = document.membership.subdonate.value;}
		else{subdonate = 0;}
		total = 1*sublevel + 1*subsenior + 100*subdonate;
		program = senior + level;
		if(subdonate > 0){program += " +$" + convert(subdonate*100);}
	}
	else{
		total = "";
		program = "";
		sublevel = "";
		subsenior = "";
		subdonate = "";
	}
	document.membership.total.value = convert(total);
	if(sublevel === ""){document.membership.sublevel.value = sublevel;}
	else{document.membership.sublevel.value = convert(sublevel);}
	document.membership.subsenior.value = convert(subsenior);
	document.membership.subdonate.value = convert(subdonate*100);
	document.transact.transProgramName.value = program;
	if(total > 0){document.transact.transAmount.value = convert(total);}
	else{document.transact.transAmount.value = "";}
}

function verify(){
	if(document.membership.memlevel.selectedIndex === 0){alert("Please select your membership level before proceeding.");return false;}
	return true;
}