function process(){

var loc = location.href;

	if ($('#young').attr('checked') || ($('#middle').attr('checked') && $('#short').attr('checked'))){
		// redirect to MSA 55 minus product
		loc = loc.replace(/productId=(\d)+/, 'productId=901');
		window.location.href = loc;
	}
	else if ($('#old').attr('checked') || ($('#middle').attr('checked') && $('#long').attr('checked'))){
		// redirect to MSA 55 plus product
		loc = loc.replace(/productId=(\d)+/, 'productId=917');
		window.location.href = loc;
	}
	else{
		alert('Please enter the information');
	}
}