// Form field validation function



function trim(s) {

    while (s.substring(0,1) == ' ') {

      s = s.substring(1,s.length);

    }

    while (s.substring(s.length-1,s.length) == ' ') {

      s = s.substring(0,s.length-1);

    }

    return s;

}



/**

 * This function checks if the Date of Birth of the user is not greater than 13 years.

 * Returns true if date is valid, false otherwise. Accepts the day, month and year as parameters.

 */

function isNotUnderAge(day, month, year)

{

    var limit = new Date();

    limit.setYear(limit.getYear() - 13);

    limit = limit.getTime();



    var motherDOB = new Date();

    motherDOB.setYear(year);

    motherDOB.setMonth(month);

    motherDOB.setDate(day);

    motherDOB = motherDOB.getTime();



    if(motherDOB >= limit) {

      return false;

    }

    return true;

}







/**

 *This function returns the number of days in february if year is supplied as parameter.

 */

function getDaysInFebruary (year) {

  // February has 29 days in any year evenly divisible by four,

  // EXCEPT for centurial years which are not also divisible by 400.

  return (((year % 4 == 0) && ( (!(year % 100 == 0)) || (year % 400 == 0))) ? 29 : 28 );

}



/**
  * This function returns an array of month days. Month January is at index 1.
  */
 function getMonthDaysArray(year) {
  var aName = new Array( );


   for (var i = 1; i < 13; i++) {
     if (i==1) {
       aName[i] = 31;
     }
     if (i==4 || i==6 || i==9 || i==11) {
       aName[i] = 30;
     }
     if (i==2 && year!=-1) {
       aName[i] = getDaysInFebruary(year);
     }
    }

    return aName
 }



function validateEmail(str) {

  if (window.RegExp) {

    var reg1str = "(@.*@)|(\\.\\.)|(@\\.)|(\\.@)|(^\\.)";

    var reg2str = "^.+\\@(\\[?)[a-zA-Z0-9\\-\\.]+\\.([a-zA-Z]{2,3}|[0-9]{1,3})(\\]?)$";

    var reg1 = new RegExp(reg1str);

    var reg2 = new RegExp(reg2str);

    if (!reg1.test(str) && reg2.test(str)){

      return true;

    } else {

    	return false;

    }

  } else {

  	return (str.indexOf(".") > 2) && (str.indexOf("@") > 0);

  }

}



function isEmailAddr(email)

{

  var result = false;



  var theStr = new String(trim(email.value));

  var index = theStr.indexOf("@");

  if (index > 0)

  {

    var pindex = theStr.indexOf(".",index);

    if ((pindex > index+1) && (theStr.length > pindex+1))

	result = true;

  }

  return result;

}



function validRequired(formField)

{

	var result = true;

	if (formField.value == "")

	{

		//alert('Please enter a value for the "' + fieldLabel +'" field.');

		result = false;

	}



	return result;

}



function allDigits(str)

{

	return inValidCharSet(str,"0123456789");

}



function inValidCharSet(str,charset)

{

	var result = true;

  str = trim(str);

	// Note: doesn't use regular expressions to avoid early Mac browser bugs

	for (var i=0;i<str.length;i++)

		if (charset.indexOf(str.substr(i,1))<0)

		{

			result = false;

			break;

		}



	return result;

}





/*function validEmail(formField)

{

	var result = true;



	if (formField.value.length < 3) || !isEmailAddr(formField.value) )

	{

		//alert("Please enter a complete email address in the form: yourname@yourdomain.com");

		result = false;

	}



  return result;



}*/



function validInt(formField)

{

	var result = true;

  var formFieldValue = trim(fromField.value);

 	if (result)

 	{

 		var num = parseInt(formFieldValue, 10);

 		if (isNaN(num))

 		{

 			//alert('Please enter a number for the "' + fieldLabel +'" field.');

			result = false;

		}

	}



	return result;

}

function validCharacters(formField)

{

	var result = true;

  var stringto = trim(formField.value);



  if (!(stringto.search(/^[a-zA-Zé]*$/) != -1)) {

      //alert('Please enter only characters for the "' + fieldLabel +'" field.');

      result = false;

  }



  return result;

}

function validCharactersLastName(formField)

{

	var result = true;

  var stringto = trim(formField.value);

  if (!(stringto.search(/^[a-zA-Zé]*[ ]*[\-]?[ ]*[\']?[a-zA-Zé]*$/) != -1)) {


      //alert('Please enter only characters for the "' + fieldLabel +'" field.');

      result = false;

  }



  return result;

}



function validCharactersName(formField)
{  
	var result = true;
  var stringto = trim(formField.value);

  if (!(stringto.search(/^[a-zA-Zé]*[ ]*[\-]?[ ]*[\']?[a-zA-Zé]*$/) != -1)) {
      //alert('Please enter only characters for the "' + fieldLabel +'" field.');
      result = false;
  }

  return result; 
}



function validPhone(formField)

{

    var result = true;

    var stringto = trim(formField.value);



	var exp = /^(\()?[1-9]\d{2}(\))?(\s|-|.)?\d{3}(\s|-)?\d{4}$/;
 
	var reg = new RegExp(exp);

    if (stringto != "") {

      if (!reg.test(stringto)) {

          //alert('Please enter valid number for the "' + fieldLabel +'" field.');

          result = false;

      }

    }

    return result;

}





function validZip(formField)

{

	var result = true;

  var stringto = trim(formField.value);



  if (!(stringto.search(/^[0-9]{0,10}$/) != -1)) {

      //alert('Please enter valid number for the "' + fieldLabel +'" field.');

      result = false;

  }



  return result;

}



function isZipUS(s) 

{

     /*

	  Check for correct zip code

     */

	 

	 var zipcode = trim(s);

	 var valid = "0123456789-";

	 var hyphencount = 0;

	 if (zipcode.length!=5 && zipcode.length!=10) {

		 //alert("Please enter your 5 digit or 5 digit+4 zip code.");

		 return false;

	 }

	 for (var i=0; i < zipcode.length; i++) {

		 temp = "" + zipcode.substring(i, i+1);

		 if (temp == "-" || temp == " ") hyphencount++;

		 if (valid.indexOf(temp) == "-1") {

		 	//alert("Invalid characters in your zip code.  Please enter number values.");

		   	return false;

		 }

		 

		 if ((hyphencount > 1) || ((zipcode.length==10) && ""+zipcode.charAt(5)!="-" && ""+zipcode.charAt(5)!=" ")) {

			 	//alert("The hyphen character should be used with a properly formatted 5 digit+four zip code, like '12345-6789'.   Please try again.");

			    return false;

			}

	 }

	 return true;

}



function isZipCA(s) {

     var zipcode = trim(s);

	 if (zipcode.length!=6 && zipcode.length!=7) {
	  	return false;
	 }

	 if(zipcode.length==6){
	 	for(var i=0; i<zipcode.length; i++){
	 		var c = zipcode.charAt(i);
			var alphaFlag = isLetter(c);
			var digitFlag = isDigit(c);
			if(i%2 == 0 && !alphaFlag) {
				return false;
			}
			if(i%2 == 1 && !digitFlag) {
				return false;
			}
	 	}
	 	return true;
	 }else if(zipcode.length==7) {
	 	for(var i=0; i<zipcode.length; i++){
		 	var c = zipcode.charAt(i);
			var alphaFlag = isLetter(c);
			var digitFlag = isDigit(c);
			if(i==3 && c!=' ' && c!='-'){
				return false;
			}else{
				if((i==0 || i==2 || i==5) && !alphaFlag){
					return false;
				}
				if((i==1 || i==4 || i==6) && !digitFlag) {
					return false;
				}
	 		}
	 	}
	 	return true;
	 }
	 return true;
}//end of function isZipCA()





function isLetter (c)

{   

	return ( ((c >= "a") && (c <= "z")) || ((c >= "A") && (c <= "Z")) )

}

function isDigit (c)
{   
	return ((c >= "0") && (c <= "9"));
}



function isDigitCA (c)

{   

	return (((c >= "0") && (c <= "9")) || (c == "O") || (c == "o") || (c == "l"));

}



function isSpace(s)

{

	var whitespace = " \t\n\r"; 

	return ((s != null) && (s.length == 1) && (whitespace.indexOf(s) != -1));

}



function isWhitespaceOrHyphen(s)

{   

	if ((isSpace(s)) || (isHyphen(s)))

	{

		return true;

	}

	return false;

}



function isHyphen(c)

{   

	return (c == "-");

}



function removeWhiteSpace(str){

	if(null==str || str == "" ){

		return str;

	}

	var res = "";

	for(var i=0; i<str.length; i++){

		if(!isSpace(str.charAt(i))){

			res = res + str.charAt(i);

		}

	}

	return res;

}

function countWords(paragraph_text){
	var total_words;
    if (paragraph_text.length < 2) {
		total_words = 0;
    }
    var paragraph_text = paragraph_text + " ";
	var clean_text = paragraph_text;
	clean_text = clean_text.replace(/[ ]*([!\-,.\'\":;()])/gi, "$1 ");
	clean_text = clean_text.replace(/[\n\t\r]+/gi, " ");
	clean_text = clean_text.replace(/[ ]+/gi, " ");
    var word_list = clean_text.split(" ");
    var total_words = word_list.length - 1;
    return total_words;
}

function getTextForNWords(paragraph_text, max_words) {
	var clean_text = paragraph_text + " ";
	clean_text = clean_text.replace(/[ ]*([!\-,.\'\":;()])/gi, "$1 ");
	clean_text = clean_text.replace(/[\n\t\r]+/gi, " ");
	clean_text = clean_text.replace(/[ ]+/gi, " ");
    var words_list = clean_text.split(" ");
    var text = "";
    for(i=0; i < max_words; i++) {
		text += words_list[i] + " ";
    }
    return text;
}

function validCity(formField){
  var result = true;
  var stringto = trim(formField.value);
  if (!(stringto.search(/^[a-zA-Z\s-.]*[\']?[a-zA-Z\s-.]*$/) != -1)) {
       result = false;
  }
  return result;
}
function validMaxLength(formField)
{
	var result = true;
	if(formField.value.length>150) result =false;
	return result;
}

function validMaxLengthAdd(formField)
{
	var result = true;
	if(formField.value.length>300) result =false;
	return result;
}

//Validate email domain for input field.
function validEmailDomain(email) {

	var returnVal = false;    
    var index = email.value.lastIndexOf('.') + 1;
	var email_domain = email.value.substr(index);
    var domains = new Array(24);
	domains[0] = "biz";
	domains[1] = "com";
	domains[2] = "coop";
	domains[3] = "edu";
	domains[4] = "gov";
	domains[5] = "info";
	domains[6] = "int";
	domains[7] = "jobs";
	domains[8] = "mil";
	domains[9] = "mobi";
	domains[10] = "museum";
	domains[11] = "name";
	domains[12] = "net";
	domains[13] = "org";
	domains[14] = "pro";
	domains[15] = "tel";
	domains[16] = "travel";
	domains[17] = "pro";
	domains[18] = "post";
	domains[19] = "geo";
	domains[20] = "ca";
	domains[21] = "us";
	domains[22] = "fr";

	if(index != 0){
		for(i = 0; i < domains.length && returnVal == false; i++) {
			if(email_domain == domains[i]) {
				returnVal = true;
			}
		}
	}

return returnVal;
}

//Validate email domain for string.
function validateEmailDomain(email) {

	var returnVal = false;    
    var index = email.lastIndexOf('.') + 1;
	var email_domain = email.substr(index);
    var domains = new Array(24);
	domains[0] = "biz";
	domains[1] = "com";
	domains[2] = "coop";
	domains[3] = "edu";
	domains[4] = "gov";
	domains[5] = "info";
	domains[6] = "int";
	domains[7] = "jobs";
	domains[8] = "mil";
	domains[9] = "mobi";
	domains[10] = "museum";
	domains[11] = "name";
	domains[12] = "net";
	domains[13] = "org";
	domains[14] = "pro";
	domains[15] = "tel";
	domains[16] = "travel";
	domains[17] = "pro";
	domains[18] = "post";
	domains[19] = "geo";
	domains[20] = "ca";
	domains[21] = "us";
	domains[22] = "fr";

	if(index != 0){
		for(i = 0; i < domains.length && returnVal == false; i++) {
			if(email_domain == domains[i]) {
				returnVal = true;
			}
		}
	}

return returnVal;
}