jQuery.validator.addMethod("maxWords", function(value, element, params) {
    return this.optional(element) || value.match(/\b\w+\b/g).length < params;
}, "Please enter {0} words or less.");

jQuery.validator.addMethod("minWords", function(value, element, params) {
    return this.optional(element) || value.match(/\b\w+\b/g).length >= params;
}, "Please enter at least {0} words.");

jQuery.validator.addMethod("rangeWords", function(value, element, params) {
    return this.optional(element) || value.match(/\b\w+\b/g).length >= params[0] && value.match(/bw+b/g).length < params[1];
}, "Please enter between {0} and {1} words.");


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 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("nowhitespace", function(value, element) {
  return this.optional(element) || /^\S+$/i.test(value);
}, "No white space please");

jQuery.validator.addMethod("ziprange", function(value, element) {
  return this.optional(element) || /^90[2-5]\d\{2}-\d{4}$/.test(value);
}, "Your ZIP-code must be in the range 902xx-xxxx to 905-xx-xxxx");

/**
* Return true, if the value is a valid vehicle identification number (VIN).
*
* Works with all kind of text inputs.
*
* @example <input type="text" size="20" name="VehicleID" class="{required:true,vinUS:true}" />
* @desc Declares a required input element whose value must be a valid vehicle identification number.
*
* @name jQuery.validator.methods.vinUS
* @type Boolean
* @cat Plugins/Validate/Methods
*/
jQuery.validator.addMethod(
  "vinUS",
  function(v){
    if (v.length != 17)
      return false;
    var i, n, d, f, cd, cdv;
    var LL    = ["A","B","C","D","E","F","G","H","J","K","L","M","N","P","R","S","T","U","V","W","X","Y","Z"];
    var VL    = [1,2,3,4,5,6,7,8,1,2,3,4,5,7,9,2,3,4,5,6,7,8,9];
    var FL    = [8,7,6,5,4,3,2,10,0,9,8,7,6,5,4,3,2];
    var rs    = 0;
    for(i = 0; i < 17; i++){
        f = FL[i];
        d = v.slice(i,i+1);
        if(i == 8){
            cdv = d;
        }
        if(!isNaN(d)){
            d *= f;
        }
        else{
            for(n = 0; n < LL.length; n++){
                if(d.toUpperCase() === LL[n]){
                    d = VL[n];
                    d *= f;
                    if(isNaN(cdv) && n == 8){
                        cdv = LL[n];
                    }
                    break;
                }
            }
        }
        rs += d;
    }
    cd = rs % 11;
    if(cd == 10){cd = "X";}
    if(cd == cdv){return true;}
    return false;
  },
  "The specified vehicle identification number (VIN) is invalid."
);

/**
  * 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("01/13/1990")
  * @result false
  *
  * @example jQuery.validator.methods.date("01.01.1900")
  * @result false
  *
  * @example <input name="pippo" class="{dateITA:true}" />
  * @desc Declares an optional input element whose value must be a valid date.
  *
  * @name jQuery.validator.methods.dateITA
  * @type Boolean
  * @cat Plugins/Validate/Methods
  */
jQuery.validator.addMethod(
  "dateITA",
  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 gg = parseInt(adata[0],10);
      var mm = 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"
);

/**
 * matches US phone number format
 *
 * where the area code may not start with 1 and the prefix may not start with 1
 * allows '-' or ' ' as a separator and allows parens around area code
 * some people may want to put a '1' in front of their number
 *
 * 1(212)-999-2345
 * or
 * 212 999 2344
 * or
 * 212-999-0983
 *
 * but not
 * 111-123-5434
 * and not
 * 212 123 4567
 */
jQuery.validator.addMethod("phone", function(phone_number, element) {
    phone_number = phone_number.replace(/\s+/g, "");
  return this.optional(element) || phone_number.length > 9 &&
    phone_number.match(/^(1-?)?(\([2-9]\d{2}\)|[2-9]\d{2})-?[2-9]\d{2}-?\d{4}$/);
}, "Please specify a valid phone number");

// TODO check if value starts with <, otherwise don't try stripping anything
jQuery.validator.addMethod("strippedminlength", function(value, element, param) {
  return jQuery(value).text().length >= param;
}, jQuery.format("Please enter at least {0} characters"));

// same as email, but TLD is optional
jQuery.validator.addMethod("email2", function(value, element, param) {
  return this.optional(element) || /^((([a-z]|\d|[!#\$%&'\*\+\-\/=\?\^_`{\|}~]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])+(\.([a-z]|\d|[!#\$%&'\*\+\-\/=\?\^_`{\|}~]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])+)*)|((\x22)((((\x20|\x09)*(\x0d\x0a))?(\x20|\x09)+)?(([\x01-\x08\x0b\x0c\x0e-\x1f\x7f]|\x21|[\x23-\x5b]|[\x5d-\x7e]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(\\([\x01-\x09\x0b\x0c\x0d-\x7f]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF]))))*(((\x20|\x09)*(\x0d\x0a))?(\x20|\x09)+)?(\x22)))@((([a-z]|\d|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(([a-z]|\d|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])*([a-z]|\d|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])))\.)*(([a-z]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(([a-z]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])*([a-z]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])))\.?$/i.test(value);
}, jQuery.validator.messages.email);

// same as url, but TLD is optional
jQuery.validator.addMethod("url2", function(value, element, param) {
  return this.optional(element) || /^(https?|ftp):\/\/(((([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(%[\da-f]{2})|[!\$&'\(\)\*\+,;=]|:)*@)?(((\d|[1-9]\d|1\d\d|2[0-4]\d|25[0-5])\.(\d|[1-9]\d|1\d\d|2[0-4]\d|25[0-5])\.(\d|[1-9]\d|1\d\d|2[0-4]\d|25[0-5])\.(\d|[1-9]\d|1\d\d|2[0-4]\d|25[0-5]))|((([a-z]|\d|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(([a-z]|\d|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])*([a-z]|\d|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])))\.)*(([a-z]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(([a-z]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])*([a-z]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])))\.?)(:\d*)?)(\/((([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(%[\da-f]{2})|[!\$&'\(\)\*\+,;=]|:|@)+(\/(([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(%[\da-f]{2})|[!\$&'\(\)\*\+,;=]|:|@)*)*)?)?(\?((([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(%[\da-f]{2})|[!\$&'\(\)\*\+,;=]|:|@)|[\uE000-\uF8FF]|\/|\?)*)?(\#((([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(%[\da-f]{2})|[!\$&'\(\)\*\+,;=]|:|@)|\/|\?)*)?$/i.test(value);
}, jQuery.validator.messages.url);