jQuery.validator.addMethod("letterswithbasicpunc", function(value, element) {
	return this.optional(element) || /^[a-z-.,()'\"\s]+$/i.test(value);
}, "Letters or punctuation only please");  

jQuery.validator.addMethod("alphanumeric", function(value, element) {
	return this.optional(element) || /^\w+$/i.test(value);
}, "Letters, numbers, spaces or underscores only please");  

jQuery.validator.addMethod("lettersonly", function(value, element) {
	return this.optional(element) || /^[a-z]+$/i.test(value);
}, "Letters only please"); 

jQuery.validator.addMethod("integer", function(value, element) {
	return this.optional(element) || /^-?\d+$/.test(value);
}, "A positive or negative non-decimal number please");

/**
  * @name jQuery.validator.methods.dateITA
  * Return true, if the value is a valid date, also making this formal check dd/mm/yyyy.
  *
  * @example jQuery.validator.methods.date("01/01/1900")  @result true
  * @example jQuery.validator.methods.date("13/01/1990") @result false
  */
jQuery.validator.addMethod("mmddyyyy",
	function(value, element) {
		var check = false;
		var re = /^\d{1,2}\/\d{1,2}\/\d{4}$/
		if( re.test(value)){
			var adata = value.split('/');
			var mm = parseInt(adata[0],10);
			var gg = parseInt(adata[1],10);
			var aaaa = parseInt(adata[2],10);
			var xdata = new Date(aaaa,mm-1,gg);
			if ( ( xdata.getFullYear() == aaaa ) && ( xdata.getMonth () == mm - 1 ) && ( xdata.getDate() == gg ) )
				check = true;
			else
				check = false;
		} else
			check = false;
		return this.optional(element) || check;
	}, 
	"Please enter a correct date"
);

jQuery.validator.addMethod("isvisible", function(value, element) { 
	return $(element).is(":hidden") || !this.optional(element);
	}, 
"This is required"
);

jQuery.validator.addMethod("mmyy",
	function(value, element) {
		var check = false;
		var re = /^\d{1,2}\/\d{2}$/
		if( re.test(value)){
			var adata = value.split('/');
			var mm = parseInt(adata[0],10);
			var aaaa = parseInt(adata[1],10);
			var xdata = new Date(aaaa+2000,mm,1);
			if (aaaa>0 && aaaa<37 && mm>0 & mm<13 ) {
				check = true;
			} else {
				check = false;
			}
		} else
			check = false;
		return this.optional(element) || check;
	}, 
	"Please enter a date in the form MM/YY"
);


jQuery.validator.addMethod("time", function(value, element) {
		return this.optional(element) || /^([01][0-9])|(2[0123]):([0-5])([0-9])$/.test(value);
	}, "Please enter a valid time, between 00:00 and 23:59"
);

/**
 * matches US phone number format 
 * allows '-' or ' ' as a separator and allows parens around area code 
 */
jQuery.validator.addMethod("phone", function(phone_number, element) {
//    phone_number = phone_number.replace(/\s+/g, ""); //strip spaces?
	phone_number = phone_number.replace(/^\s+|\s+$/g,""); //trim
	pattern= /^[\(]?([0-9]{1,4})[-| |\)]+([0-9]{3,4})[-| ]?([0-9]{3,})$/; //ours
//	pattern=/^(1-?)?(\([2-9]\d{2}\)|[2-9]\d{2})-?[2-9]\d{2}-?\d{4}$/; //theirs
	success= this.optional(element) || phone_number.length > 11 && phone_number.match(pattern);
 	if (success && phone_number.length > 11) {
	 	result = pattern.exec(phone_number);
	 	element.value= result[1] + " " + result[2] + "-" + result[3];
 		}
	return success;
}, "Please enter a valid phone# (w/spaces)");


// NOTICE: Modified version of Castle.Components.Validator.CreditCardValidator
// Redistributed under the the Apache License 2.0 at http://www.apache.org/licenses/LICENSE-2.0
// Valid Types: mastercard, visa, amex, dinersclub, enroute, discover, jcb, unknown, all (overrides all other settings)
jQuery.validator.addMethod("creditcardtypes", function(value, element, param) {

	if (/[^0-9-]+/.test(value)) 
		return false;
	
	value = value.replace(/\D/g, "");
	
	var validTypes = 0x0000;
	
	if (param.mastercard) 
		validTypes |= 0x0001;
	if (param.visa) 
		validTypes |= 0x0002;
	if (param.amex) 
		validTypes |= 0x0004;
	if (param.dinersclub) 
		validTypes |= 0x0008;
	if (param.enroute) 
		validTypes |= 0x0010;
	if (param.discover) 
		validTypes |= 0x0020;
	if (param.jcb) 
		validTypes |= 0x0040;
	if (param.unknown) 
		validTypes |= 0x0080;
	if (param.all) 
		validTypes = 0x0001 | 0x0002 | 0x0004 | 0x0008 | 0x0010 | 0x0020 | 0x0040 | 0x0080;
	
	if (validTypes & 0x0001 && /^(51|52|53|54|55)/.test(value)) { //mastercard
		return value.length == 16;
	}
	if (validTypes & 0x0002 && /^(4)/.test(value)) { //visa
		return value.length == 16;
	}
	if (validTypes & 0x0004 && /^(34|37)/.test(value)) { //amex
		return value.length == 15;
	}
	if (validTypes & 0x0008 && /^(300|301|302|303|304|305|36|38)/.test(value)) { //dinersclub
		return value.length == 14;
	}
	if (validTypes & 0x0010 && /^(2014|2149)/.test(value)) { //enroute
		return value.length == 15;
	}
	if (validTypes & 0x0020 && /^(6011)/.test(value)) { //discover
		return value.length == 16;
	}
	if (validTypes & 0x0040 && /^(3)/.test(value)) { //jcb
		return value.length == 16;
	}
	if (validTypes & 0x0040 && /^(2131|1800)/.test(value)) { //jcb
		return value.length == 15;
	}
	if (validTypes & 0x0080) { //unknown
		return true;
	}
	return false;
}, "Please enter a valid credit card number.");