disallows 0, negative numbers, blank value. Commas two decimal places are optional

jQuery Validate US Currency

$.validator.addMethod("UScurrency", function (value) {
  return value.match(/^\$?[^-]?[1-9]([0-9]+,?)*(\.([0-9]{1,2}))?$/) || value == "" || Number(value) > 0;

}, "Please enter a valid dollar amount");

form.validate({ 
    });
    $.validator.addClassRules({
        currency: {
            UScurrency: true
        }
    });