function formatCurrency(num) {
	num = num.toString().replace(/\$|\,/g,'');
	if(isNaN(num))
	num = "0";
	sign = (num == (num = Math.abs(num)));
	num = Math.floor(num*100+0.50000000001);
	cents = num%100;
	num = Math.floor(num/100).toString();
	
	if(cents<10)
		cents = "0" + cents;
	
	for (var i = 0; i < Math.floor((num.length-(1+i))/3); i++)
		num = num.substring(0,num.length-(4*i+3))+','+
		num.substring(num.length-(4*i+3));
	
	return (((sign)?'':'-') + num + '.' + cents);
}

function adj_total(){
	t = 0;
	f = document.reg_form;
	r = f.rick_session;
	sat = f.sat_ti;
	sun = f.sun_ti;
	whole = f.whole_ti;
	
	if(whole.checked){
		sat.checked = false;
		sun.checked = false;
	}
	
	if(r.checked) t = t + parseInt(r.value);
	if(sat.checked) t = t + parseInt(sat.value);
	if(sun.checked) t = t + parseInt(sun.value);
	if(whole.checked) t = t + parseInt(whole.value);
	
	if(r.checked && (sat.checked || sun.checked || whole.checked)) t = t * .9;
	
	document.getElementById("total_price").innerHTML = formatCurrency(t);
}