// 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 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);
        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);
	*/
	
	var bracket=3
	strPhone=trim(strPhone)
	if(strPhone.indexOf("+")>1) return false
	if(strPhone.indexOf("(")!=-1 && strPhone.indexOf(")")==-1)return false
	if(strPhone.indexOf("(")==-1 && strPhone.indexOf(")")!=-1)return false
	s=stripCharsInBag(strPhone,validWorldPhoneChars);
	return (isInteger(s) && s.length >= minDigitsInIPhoneNumber);
	
}

// takes a String
function validatePhoneNumber(phoneNumber){
	//var Phone=document.frmSample.txtPhone
	
	if ((phoneNumber==null)||(phoneNumber=="")){
		alert("Please Enter your Phone Number")
		//Phone.focus()
		return false
	}
	if (checkInternationalPhone(phoneNumber)==false){
		alert("Please Enter a Valid Phone Number")
		//Phone.value=""
		//Phone.focus()
		return false
	}
	return true
 }


/*
function stripHTML(){
	var re = /(<([^>]+)>)/gi;
	for (i=0; i<arguments.length; i++)
	arguments[i].value=arguments[i].value.replace(re, "")
	}
*/

function validateMessage(message) {
	var htmlPattern = /(<([^>]+)>)/gi;
	var htmlInstances = message.match(htmlPattern);
	if (htmlInstances && htmlInstances.length > 0 ) {
		alert("HTML Code is not allowed in the message.");
		return false;
	}

	var httpPattern = /http[s]?:\/\//gi;
	var httpInstances = message.match(httpPattern);	
	if (httpInstances && httpInstances.length > 1 ) {
		alert("You can not have more than one hyperlink in the message.");
		return false;
	}
	return true;
	
}