[yunis91]

ksa,
спасибо уже не надо) сам разобрался
вот так написал

var calculate = {
	_oldType: 0,
	_oldDost: 0,
	_TypeDiff: 0,
	_DostDiff: 0,
	clickDost: function(obj){
		var val=calculate._oldDost-obj.value;
		val=(val<0)? 0: val;
		calculate._DostDiff = val;
		calculate._oldDost = obj.value;
		calculate.showDiff();
	},
	clickType: function(obj){
		var val = calculate._oldType-obj.value;
		val=(val<0)? 0: val;
		calculate._TypeDiff = val;
		calculate._oldType = obj.value;
		calculate.showDiff();
	},
	showDiff: function(){
		value = parseInt(calculate._TypeDiff) + parseInt(calculate._DostDiff);
		if(value <= 0){
			$('#resultViq').html('');
			$('#profit').hide();
		}else{
			$('#resultViq').html(value);
			$('#profit').show();
		}
	}
}

$(function (){
	$('[name="radiog_infoprod"]').click(function (){
		calculate.clickType(this);
	});
});

$(function (){
	$('[name="radiog_dostavka"]').click(function (){
		calculate.clickDost(this);
	});
});