var ErrorContainer_Suffix = "_err";
var Container_Suffix = "_ctr";
var ErrMsg_Required = "Value is required.";
var ErrMsg_ValidType = "Please specify valid value.";
var ErrMsg_ValidMinLength = "The value has less than the minimum number of allowable characters.";
var ErrMsg_ValidMaxLength = "The value exceeded the maximum number of allowable characters.";
var ErrMsg_ValidMinValueLength = "The selection has less than the minimum number of values.";
var ErrMsg_ValidMaxValueLength = "The selection exceeded the maximum number of values.";
var ErrMsg_EmailVerify = "Please verify your e-mail address correctly."
var ErrMsg_PwdFormat="Passwords must be 5-8 characters and must use a combination of letters and numbers, e.g., abc123. Passwords are <strong>not case sensitive</strong>.";
var ErrMsg_PasswordVerify = "Please verify your password correctly."
var ErrMsg_NpiNumberReq = "Please enter an NPI number."
var ErrMsg_ValidNpiNumber = "Please enter a valid NPI number."
var DefaultErrorMessage = "We're sorry but there are problems with your submission. Please correct the problems and submit again.";

/**
 Definition of a validation of object. Following properties are defined in this entity:
 Name : registratio form field name 
 Type : Alpha, Numeric, Alphanumeric, Date, multiselect, radio, checkbox, checkboxlist, phone, email, url
 Required : field is required or not
 MaximumLength : Maximum chars allowed for the response
                 For Type checkboxlist and multiselect, this restricts the user to select items more than the define maximum value.
 MinimumLength : Minimum chars allowed for the response
                 For Type checkboxlist and multiselect, this restricts the user to select items less than the define minimum value.
RegularExpression : regular expression to be executed to validate the value
ErrorMessage : error message
CustomFunction : function specifically designed for custom validation
**/

function Validation(name, value, type, required, maxlen, minlen, regex, errmsg, customfunc) 
{
    this.Type = type;
    this.Name = name;
    this.Value = value;
    this.Required = required;
    this.MaximumLength = maxlen;
    this.MinimumLength = minlen;
    this.RegularExpression = regex;
    this.ErrorMessage = errmsg;
    this.CustomFunction = customfunc;
}

//retrieve question form id
Validation.prototype.GetFormQuestionId = function ()
{
    return this.Name;
}

// get element in the page by name
function getElement(name)
{
    if (!name)
        return null;
    return document.getElementsByName(name);
}

// Get values of a particular field.
function GetValues(id, type)
{
    var values = "";
    type = type.toLowerCase();
    //iterate through the selections if type is checkbox, radio or checkboxlist
    if ( type == "radio" || type == "checkbox" || type == "checkboxlist")
    {
        var valuelist = document.getElementsByName(id);      
        if (valuelist) 
        {    
            for (var i=0; i<valuelist.length; i++)
                if (valuelist[i].checked || valuelist[i].selected) 
                {
                    if (values == "")
                        values = valuelist[i].value;
                    else
                        values = values + "," + valuelist[i].value;
                }
        }
    }
    //iterate through the list of items if the type is multiselect
    else if (type == "multiselect")
    {
        var list = document.getElementById(id); 
        if (list)
        {
            for (var i=0; i<list.options.length; i++)
                if (list.options[i].selected) 
                {
                    if (values == "")
                        values = list.options[i].value;
                    else
                        values = values + "," + list.options[i].value;
                }
        }
    }
    //otherwise jsut retrieve the data
    else
    {
        var formQuestion = document.getElementById(id);   
        if (formQuestion)
            return formQuestion.value;
    }
        
    return values;
}

//displays the main error message
function setMainErrorMessage(message)
{
        var errDiv = document.getElementById("errorsummary");     
        if (errDiv) 
        {
            errDiv.innerHTML = message;
            if (message=="")
                errDiv.className = "reg_main_err_msg_off"; 
            else
                errDiv.className = "reg_main_err_msg"; 
        }
}
//sets the error message of a particular field
function setErrorMessage(containerId, message)
{
    var errorDivId = containerId + ErrorContainer_Suffix;
    var errDiv = document.getElementById(errorDivId);     

    if (errDiv)
        errDiv.innerHTML = message;
    
    var conDivId = containerId + Container_Suffix;
    var conDiv = document.getElementById(conDivId);     
    
    if (conDiv) 
    {
        if (message == "")
        {
            if (conDiv.className == "reg_err_msg")
                conDiv.className = "reg_err_msg_off";   
        }
        else
        {
            if (conDiv.className == "reg_err_msg_off")
                conDiv.className = "reg_err_msg"; 
        }
    }
}

//Main validation function.
function ValidateRegistration()
{
    setMainErrorMessage("");
    var bSuccess = true;
    
    if(validations)
    {
        
        for(var i=0;i<validations.length;i++)
        {
            var questionId = validations[i].GetFormQuestionId();
            setErrorMessage(questionId, "");

            validations[i].Value = GetValues(questionId, validations[i].Type);

            if (!validations[i].HasRequiredValue()) 
            {
            //alert('HasRequiredValue: ' + questionId);
                setErrorMessage(questionId, ErrMsg_Required);
                bSuccess = false;
                continue; 
            }

            if (!validations[i].HasValidType())    
            {
            //alert('HasValidType: ' + questionId);
                setErrorMessage(questionId, ErrMsg_ValidType);
                bSuccess = false;
                continue;
            }
            
            if (!validations[i].ExecuteExpression())
            {
            //alert('ExecuteExpression: ' + questionId);
                setErrorMessage(questionId, validations[i].ErrorMessage);
                bSuccess = false;
                continue;
            }
           
            if (!validations[i].HasValidMinLength())
            {
            //alert('HasValidMinLength: ' + questionId);
                if (validations[i].Type.toLowerCase() == "checkboxlist" ||
                    validations[i].Type.toLowerCase() == "multiselect") 
                    setErrorMessage(questionId, ErrMsg_ValidMinValueLength);
                else
                    setErrorMessage(questionId, ErrMsg_ValidMinLength);
                bSuccess = false;
                continue;
            }

            if (!validations[i].HasValidMaxLength())
            {
            //alert('HasValidMaxLength: ' + questionId);
                if (validations[i].Type.toLowerCase() == "checkboxlist" ||
                    validations[i].Type.toLowerCase() == "multiselect") 
                    setErrorMessage(questionId, ErrMsg_ValidMaxValueLength);
                else
                    setErrorMessage(questionId, ErrMsg_ValidMaxLength);
                bSuccess = false;
                continue;
            }
            
            
            var message = validations[i].ExecuteCustomFunction();
            if (message != "") 
            {
            //alert('ExecuteCustomFunction: ' + questionId);
                setErrorMessage(questionId, message);
                bSuccess = false;
                continue;
            }
            
        }
    }
    
    if (!bSuccess)
    {
        setMainErrorMessage(DefaultErrorMessage);
        window.location.href = "#top";
        return bSuccess;
    }
    else{
        //register for E-Detail
        //window.location.href="http://INSERT-EDETAIL-URL?"+buildEDetailQueryString();
        //window.location.href="/sign-up-confirmed.aspx";
        //return false;
    }
    
    return bSuccess;
}
function buildEDetailQueryString(){
    
    var thisStr="FirstName="+document.aspnetForm.reg_user_FirstName.value;
    thisStr+="&LastName"+document.aspnetForm.reg_user_LastName.value;
    thisStr+="&MiddleName=";
    thisStr+="&Address1="+document.aspnetForm.reg_user_Address1.value;
    thisStr+="&Address2="+document.aspnetForm.reg_user_Address2.value;
    thisStr+="&Address3=";
    thisStr+="&City="+document.aspnetForm.reg_user_City.value;
    thisStr+="&CountryId=";
    thisStr+="&Email="+document.aspnetForm.reg_user_EmailAddress.value;
    thisStr+="&Fax=";
    thisStr+="&NameSuffix=";
    thisStr+="&Occupation=";
    thisStr+="&Phone=";
    thisStr+="&PhoneExtension=";
    thisStr+="&PostalCode="+document.aspnetForm.reg_user_Zip.value;
    thisStr+="&Anonymous=";
    thisStr+="&Registered=";
    thisStr+="&StateProvince="+document.aspnetForm.reg_user_State.value;
    thisStr+="&Source=";
    thisStr+="&Specialty="+document.aspnetForm.reg_user_Specialty.value;
    thisStr+="&Title=";
    
    
    
    return thisStr;
}
//validates value give the maximum length
Validation.prototype.HasValidMaxLength = function ()
{
    if(!this.MaximumLength || this.MaximumLength < 0)
        return true;
    
    if (this.Type.toLowerCase() == "checkboxlist" ||
        this.Type.toLowerCase() == "multiselect") 
    {
        var len = 0;
        if (this.Value && this.Value != "")
        {
            var arrvalue = this.Value.split(",");   
            len = arrvalue.length;
        } 
        return (len <= this.MaximumLength);
    }
    else
        return (this.Value.length <= this.MaximumLength);
}

//validates value give the minimum length
Validation.prototype.HasValidMinLength = function ()
{
    if(!this.MinimumLength || this.MinimumLength < 0)
        return true;
        
    if (this.Type.toLowerCase() == "checkboxlist" ||
        this.Type.toLowerCase() == "multiselect") 
    {
        var len = 0;
        if (this.Value && this.Value != "")
        {
            var arrvalue = this.Value.split(",");   
            len = arrvalue.length;
        }
        
        return ( len >= this.MinimumLength);
    }
    else
        return (this.Value.length >= this.MinimumLength);
}


//execute regular expression to validate a particular field
Validation.prototype.ExecuteExpression = function ()
{
    if(!this.Value || this.Value == "" || !this.RegularExpression || this.RegularExpression == "" )
        return true;

    return IsValidRegularExpression(this.Value, this.RegularExpression);
}

// validates the required field
Validation.prototype.HasRequiredValue = function ()
{
    if(!this.Required || this.Required == "")
        return true;
    if (this.Required.toLowerCase() == "y" && (!this.Value || this.Value == "") )
        return false;
    return true;
}

//validate the value according to Type
Validation.prototype.HasValidType = function ()
{
    if(!this.Value || this.Value == "" || !this.Type || this.Type == "" )
        return true;
    
    switch(this.Type.toLowerCase())
    {
        case "alpha":
           return IsValidRegularExpression(this.Value, "^[A-Za-z]+$");
        case "numeric":
            return IsValidRegularExpression(this.Value,"^[0-9]+$");
        case "alphanumeric":
            return IsValidRegularExpression(this.Value,"^([A-Za-z0-9 \.\'\#\,\s]*)$");
        case "phone":
            return IsValidRegularExpression(this.Value, "^([0-9]+[() .]?)+[xX]?[ ]?[0-9]+$");
        case "email":
            return IsValidEmailAddress(this.Value);
        case "date":
            return isDate(this.Value);
        case "url":
            return IsValidRegularExpression(this.Value, "^(http|https|ftp)\://[a-zA-Z0-9\-\.]+\.[a-zA-Z]{2,3}(:[a-zA-Z0-9]*)?/?([a-zA-Z0-9\-\._\?\,\'/\\\+&amp;%\$#\=~])*$");
        case "radio", "checkbox", "checkboxlist, multiselect":
            return true;
        default: 
            return true;
    }        

}

// execute custom function if there is any
Validation.prototype.ExecuteCustomFunction = function ()
{
    if(!this.CustomFunction || this.CustomFunction == "")
        return "";
        
    try
    {
        var b = eval(this.CustomFunction + "()");
        return b;
    }
    catch(e) {
        return ErrMsg_ValidType;
    }

}

//if the value is a valid email address
function IsValidEmailAddress(value)
{
    if (value == "")
        return true;
    var regExpr = "^[a-zA-Z0-9\-\._]+\@([a-zA-Z0-9\-]+\.)+([a-zA-Z0-9]{2,4})$";
    return IsValidRegularExpression(value, regExpr)
}

//if the value matched the regular expression
function IsValidRegularExpression(value, regExpr)
{
    var rexp = new RegExp(regExpr);
    return rexp.test(value);
}

// following code shows the date validation
var dtCh= "/";
var minYear=1900;
var maxYear=2100;

function isInteger(s){
	var i;
    for (i = 0; i < s.length; i++){   
        // Check that current character is number.
        var c = s.charAt(i);
        if (((c < "0") || (c > "9"))) return false;
    }
    // All characters are numbers.
    return true;
}

function stripCharsInBag(s, bag){
	var i;
    var returnString = "";
    // Search through string's characters one by one.
    // If character is not in bag, append to returnString.
    for (i = 0; i < s.length; i++){   
        var c = s.charAt(i);
        if (bag.indexOf(c) == -1) returnString += c;
    }
    return returnString;
}

function daysInFebruary (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 );
}
function DaysArray(n) {
	for (var i = 1; i <= n; i++) {
		this[i] = 31
		if (i==4 || i==6 || i==9 || i==11) {this[i] = 30}
		if (i==2) {this[i] = 29}
   } 
   return this
}

function isDate(dtStr){
	var daysInMonth = DaysArray(12)
	var pos1=dtStr.indexOf(dtCh)
	var pos2=dtStr.indexOf(dtCh,pos1+1)
	var strMonth=dtStr.substring(0,pos1)
	var strDay=dtStr.substring(pos1+1,pos2)
	var strYear=dtStr.substring(pos2+1)
	strYr=strYear
	if (strDay.charAt(0)=="0" && strDay.length>1) strDay=strDay.substring(1)
	if (strMonth.charAt(0)=="0" && strMonth.length>1) strMonth=strMonth.substring(1)
	for (var i = 1; i <= 3; i++) {
		if (strYr.charAt(0)=="0" && strYr.length>1) strYr=strYr.substring(1)
	}
	month=parseInt(strMonth)
	day=parseInt(strDay)
	year=parseInt(strYr)
	if (pos1==-1 || pos2==-1){
		//alert("The date format should be : mm/dd/yyyy")
		return false
	}
	if (strMonth.length<1 || month<1 || month>12){
		//alert("Please enter a valid month")
		return false
	}
	if (strDay.length<1 || day<1 || day>31 || (month==2 && day>daysInFebruary(year)) || day > daysInMonth[month]){
		//alert("Please enter a valid day")
		return false
	}
	if (strYear.length != 4 || year==0 || year<minYear || year>maxYear){
		//alert("Please enter a valid 4 digit year between "+minYear+" and "+maxYear)
		return false
	}
	if (dtStr.indexOf(dtCh,pos2+1)!=-1 || isInteger(stripCharsInBag(dtStr, dtCh))==false){
		//alert("Please enter a valid date")
		return false
	}
    return true
}

/**************************************************/
/* NPI Validation for Sample Eligibility Forms   */
/**************************************************/

//Validate the form
function ValidateSampleCheck() 
{
  var errContainer1 = document.getElementById("errContainer1");
  var divLNContainer = document.getElementById("lastname-container");  
  var errContainer2 = document.getElementById("errContainer2");
  var divNPIContainer = document.getElementById("npi-container");  
  
  var bNamePass = true;
  var bNPIPass = true;

    if (!ValidateLastName()) 
    {  
        divLNContainer.style.backgroundColor = "#fef7d0";
        errContainer1.innerHTML = ErrMsg_Required;
        
        bNamePass = false; 
    }
    else {
        divLNContainer.style.backgroundColor = "transparent";
        errContainer1.innerHTML = ""; 
        
        bNamePass = true;
    }
    if (!ValidateNPINumber())
    {
        divNPIContainer.style.backgroundColor = "#fef7d0";
        errContainer2.innerHTML = ErrMsg_ValidNpiNumber;

        bNPIPass = false; 
    } 
    else {
        divNPIContainer.style.backgroundColor = "transparent";
        errContainer2.innerHTML = "";
        
        bNPIPass = true;
    }
    
    if ((bNamePass) && (bNPIPass)) { return true; }
    else { return false; }
}

//Validates Last Name field
function ValidateLastName(){
  var input = document.getElementById("h_master_MainBodyPlaceHolder_objCheckSamples_txtNameLast");
  //Verify input isn't empty
  if (input.value=="")
  { 
      //alert('fail');
    return false;
  } else {
  //alert('pass');
    return true;
  }
}

//Validates 10-digit NPI numbers (9 + 1 check digit)
function ValidateNPINumber(){
  var input = document.getElementById("h_master_MainBodyPlaceHolder_objCheckSamples_txtNPI");
  //Verify input isn't empty, is numeric, and is 10 characters
  if ((input.value=="") || 
      (!isNPIDigits(input.value)) ||
      (input.value.length != 10) ||
      (!isValidNPINumber(input.value))) {
    return false;
  } else {
    return true;
  }
}
  
//Returns whether input is made up only of digits
function isNPIDigits(input)
{
  var validChars = "0123456789";
  var ch;

  if (input == "") return false;
  
  for (i = 0; i < input.length; i++) { 
    ch = input.charAt(i); 
    if (validChars.indexOf(ch) == -1) {
      return false;
    }
  }
  return true;
}

/*****************************************************************
*	Check if the NPI Luhn check-digit is correct.
*	This code is adapted from the ISO 7812 annex.
*	Return one if NPI luhn check is ok, else zero.
*****************************************************************/
function isValidNPINumber(npi)
{
  var tmp, sum, i, j;
  /* the NPI is a 10 digit number, but it could be
  * preceded by the ISO prefix for the USA (80840)
  * when stored as part of an ID card.  The prefix
  * must be accounted for, so the NPI check-digit
  * will be the same with or without prefix.
  * The magic constant for 80840 is 24.
  */
  i = npi.length;
  if ((i == 15) && (npi.substring(0,5)=="80840"))
    sum = 0;
  else if (i == 10)
    sum = 24;	/* to compensate for the prefix */
  else 	return 0;	/* length must be 10 or 15 bytes */

  /* the algorithm calls for calculating the check-digit
  * from right to left
  */
  /* first, intialize the odd/even counter, taking into account
  * that the rightmost digit is presumed to be the check-sum
  * so in this case the rightmost digit is even instead of
  * being odd
  */
  j = 0;
  /* now scan the NPI from right to left */
  while (i--)
  { /* only digits are valid for the NPI */
    if (isNaN(npi.charAt(i)))
      return 0;
    /* this conversion works for ASCII and EBCDIC */
    tmp = npi.charAt(i) - '0';
    /* the odd positions are multiplied by 2 */
    if (j++ & 1)
    {	/* instead of multiplying by 2, in C
      * we can just shift-left by one bit
      * which is a faster way to multiply
      * by two.  Same as (tmp * 2)
      */
      if ((tmp <<= 1) > 9)
      {	/* when the multiplication by 2 
        * results in a two digit number
        * (i.e., greater than 9) then the
        * two digits are added up.  But we
        * know that the left digit must be
        * '1' and the right digit must be
        * x mod 10.  In that case we can
        * just subtract 10 instead of 'mod'
        */
        tmp -= 10;	/* 'tmp mod 10' */
        tmp++;		/* left digit is '1' */
      }
    }
    sum += tmp;
  }

  /* If the checksum mod 10 is zero then the NPI is valid */
  if (sum % 10)
    return 0;
  else
    return 1;
}


//Gets a subkey cookie value, given the cookie key and subkey.
function readSubkeyCookie(key, subkey) {
	
	key = Trim(key).toLowerCase();
	subkey = Trim(subkey).toLowerCase();

	var keys = document.cookie.split(';');
	for (var n in keys) {
		var i = keys[n].indexOf('=');
		var ckey = Trim(keys[n].substr(0, i)).toLowerCase();
		var cval = Trim(keys[n].substr(i + 1, keys[n].length - (i + 1))).toLowerCase();
		//see if our key matches the arg
		if (ckey == key) {
			//see if we have a subkey
			if (cval.indexOf('=') > -1) {
				var sk = cval.split('=');
				if (sk[0] == subkey) {
					//return the subkey value
					return sk[1];
				}
			}
		}
	}
}

function Trim(str) {  
	while(str.charAt(0) == (" ") ) { str = str.substring(1); }
	while(str.charAt(str.length-1) == " " ) { str = str.substring(0,str.length-1); }
	return str;
}