/**
 * DHTML phone number validation script. 
 */

// Declaring required variables
var digits = "0123456789";
// non-digit characters which are allowed in phone numbers
var phoneNumberDelimiters = "()-xX ";
// characters which are allowed in international phone numbers
// (a leading + is OK)
var validWorldPhoneChars = phoneNumberDelimiters + "+";

var faxNumberDelimiters = "- ";   //Fax

var validWorldFaxChars =faxNumberDelimiters + "+";						 //Fax

// Minimum no of digits in an international phone no.
var minDigitsInIPhoneNumber = 10;
var minDigitsInIFaxNumber = 10;						//Fax


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 trim(s)
{   var i;
    var returnString = "";
    // Search through string's characters one by one.
    // If character is not a whitespace, append to returnString.
    for (i = 0; i < s.length; i++)
    {   
        // Check that current character isn't whitespace.
        var c = s.charAt(i);
		returnString += c;
      //  if (c != " ") returnString += c;
    }
    return returnString;
}
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++)
    {   
        // Check that current character isn't whitespace.
        var c = s.charAt(i);
        if (bag.indexOf(c) == -1) returnString += c;
    }
    return returnString;
}

function checkInternationalPhone(strPhone){
var bracket=3
strPhone=trim(strPhone)
if(strPhone.indexOf("+")>1) return false
if(strPhone.indexOf("-")!=-1)bracket=bracket+1
if(strPhone.indexOf("(")!=-1 && strPhone.indexOf("(")>bracket)return false
var brchr=strPhone.indexOf("(")
if(strPhone.indexOf("(")!=-1 && strPhone.charAt(brchr+2)!=")")return false
if(strPhone.indexOf("(")==-1 && strPhone.indexOf(")")!=-1)return false
s=stripCharsInBag(strPhone,validWorldPhoneChars);
return (isInteger(s) && s.length >= minDigitsInIPhoneNumber);
}

function checkInternationalFax(strFax)
{
strFax=trim(strFax)
if(strFax.indexOf("+")>1) return false
if(strFax.indexOf("-")==0) return false
s=stripCharsInBag(strFax,validWorldFaxChars);
return (isInteger(s) && s.length >= minDigitsInIFaxNumber);
}


function isValidEmail(emailid)
{  
     var emailfilter=/^\w+[\+\.\w-]*@([\w-]+\.)*\w+[\w-]*\.([a-z]{2,4})$/i
     var len=emailid.length ;
     var tld=emailid.substr(len-3,3);          
     var returnval=emailfilter.test(emailid);
     if (returnval==false || tld.toLowerCase()== "web")
     {
       return false;   
     }    
    return true;
}