/* DHTML phone number validation script. Courtesy of SmartWebby.com (http://www.smartwebby.com/dhtml/) */

// Declaring required variables
var digits = "0123456789";
// non-digit characters which are allowed in phone numbers
var phoneNumberDelimiters = "()- ";
// characters which are allowed in international phone numbers
// (a leading + is OK)
var validWorldPhoneChars = phoneNumberDelimiters + "+";
// Minimum no of digits in an international phone no.
var minDigitsInIPhoneNumber = 10;

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++)
    {   
        // Check that current character isn't whitespace.
        var c = s.charAt(i);
        if (bag.indexOf(c) == -1) returnString += c;
    }
    return returnString;
}

function checkInternationalPhone(strPhone){
s=stripCharsInBag(strPhone,validWorldPhoneChars);
if(isInteger(s) && s.length >= minDigitsInIPhoneNumber){
    if(s<=19999999999) // US phone numbers starting with 1
        return true;
    else
        return false;
        
}
 
    return false;

}

function ValidatePhone(p_id,p_name,p_value){
	//var Phone=document.frmSample.txtPhone
	
	if ((p_value==null)||(p_value=="")){
		//alert("Please Enter your Phone Number")
		//Phone.focus()
		return false
	}
	if (checkInternationalPhone(p_value)==false){
		//alert("Please Enter a Valid Phone Number")
		//Phone.value=""
		//Phone.focus()
		return false
	}
	return true
 }