/**
 * 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);
return (isInteger(s) && s.length >= minDigitsInIPhoneNumber);
}

function PhoneValidation()
{
	var Phone=document.getElementById('UcManageFansComments1_txtPhoneNo').value;
	
	/*if ((Phone==null)||(Phone==""))
	{
		alert("Please Enter your Phone Number")
		Phone.focus();
		return false;
	}*/
	if(document.getElementById('UcManageFansComments1_txtPhoneNo').value!="" && document.getElementById('UcManageFansComments1_txtPhoneNo').value!=null)
	{
		if (checkInternationalPhone(Phone)==false)
			{
				alert("Please Enter a Valid Phone Number");
				document.getElementById('UcManageFansComments1_txtPhoneNo').value="";
				document.getElementById('UcManageFansComments1_txtPhoneNo').focus();
				return false;
			}
	}
	return true;
 }
function MobileValidation()
{
	var Phone=document.getElementById('UcManageFansComments1_txtMobileNo').value;
	
	/*if ((Phone==null)||(Phone==""))
	{
		alert("Please Enter your Mobile Number");
		Phone.focus();
		return false;
	}*/
	if(document.getElementById('UcManageFansComments1_txtMobileNo').value!="" && document.getElementById('UcManageFansComments1_txtMobileNo').value!=null)
	{
		if (checkInternationalPhone(Phone)==false)
			{
				alert("Please Enter a Valid Mobile Number")
				document.getElementById('UcManageFansComments1_txtMobileNo').value="";
				document.getElementById('UcManageFansComments1_txtMobileNo').focus();
				return false;
			}
			return true;
	}
 }
 
 function FaxValidation()
 {
	var Phone=document.getElementById('UcManageFansComments1_txtFax').value;
	
	/*if ((Phone==null)||(Phone==""))
	{
		alert("Please Enter your Fax Number")
		Phone.focus();
		return false
	}*/
	if(document.getElementById('UcManageFansComments1_txtFax').value!="" && document.getElementById('UcManageFansComments1_txtFax').value!=null)
	{
		if (checkInternationalPhone(Phone)==false)
			{
				alert("Please Enter a Valid Fax Number")
				document.getElementById('UcManageFansComments1_txtFax').value="";
				document.getElementById('UcManageFansComments1_txtFax').focus();
				return false;
			}
	}
			return true;
 }