// JavaScript Document
<!-- This script is based on the javascript code of Roman Feldblum (web.developer@programmer.net) -->
<!-- Original script : http://javascript.internet.com/forms/format-phone-number.html -->
<!-- Original script is revised by Eralper Yilmaz (http://www.eralper.com) -->
<!-- Revised script : http://www.kodyaz.com -->
<!-- Format : "(123) 456-7890" -->

var zChar = new Array(' ', '(', ')', '-', '.');
var maxphonelength = 14;
var phonevalue1;
var phonevalue2;
var cursorposition;

function ParseForNumber1(object){
  phonevalue1 = ParseChar(object.value, zChar);
}

function ParseForNumber2(object){
  phonevalue2 = ParseChar(object.value, zChar);
}

function backspacerUP(object,e) {
  	if(e){
    	e = e;
  	} else {
	    e = window.event;
  	}
  	if(e.which){
    	var keycode = e.which;
  	}else{
    	var keycode = e.keyCode;
  	}
	ParseForNumber1(object)
	if(keycode >= 48){
    	ValidatePhone(object);
  	}
}

function backspacerDOWN(object,e) {
  	if(e){
    	e = e;
  	}else{
    	e = window.event;
  	}
  	if(e.which){
    	var keycode = e.which;
  	}else{
    	var keycode = e.keyCode;
  	}
  	ParseForNumber2(object)
}

function GetCursorPosition(){
  	var t1 = phonevalue1;
  	var t2 = phonevalue2;
  	var bool = false;
  	for (i=0; i<t1.length; i++){
    	if (t1.substring(i,1) != t2.substring(i,1)) {
      		if(!bool) {
        		cursorposition=i;
        		window.status=cursorposition;
        		bool=true;
      		}
    	}
  	}
}

function ValidatePhone(object){
	var p = phonevalue1;
	p = p.replace(/[^\d]*/gi,"")
	if (p.length < 3) {
    	object.value=p;
  	}else if(p.length==3){
    	pp=p;
    	d4=p.indexOf('(')
    	d5=p.indexOf(')')
    	if(d4==-1){
      		pp="("+pp;
    	}
    	if(d5==-1){
      		pp=pp+")";
    	}
    	object.value = pp;
  	}else if(p.length>3 && p.length < 7){
    	p ="(" + p;
    	l30=p.length;
    	p30=p.substring(0,4);
    	p30=p30+") ";
	    p31=p.substring(4,l30);
    	pp=p30+p31;
	    object.value = pp;
	}else if(p.length >= 7){
    	p ="(" + p;
    	l30=p.length;
    	p30=p.substring(0,4);
    	p30=p30+") ";
	    p31=p.substring(4,l30);
	    pp=p30+p31;
	    l40 = pp.length;
	    p40 = pp.substring(0,9);
	    p40 = p40 + "-";
	    p41 = pp.substring(9,l40);
    	ppp = p40 + p41;
	    object.value = ppp.substring(0, maxphonelength);
  	}
	GetCursorPosition()
	if(cursorposition >= 0){
    	if (cursorposition == 0){
      		cursorposition = 2;
    	}else if (cursorposition <= 2){
	      cursorposition = cursorposition + 1;
    	}else if (cursorposition <= 4){
    	  	cursorposition = cursorposition + 3;
    	}else if (cursorposition == 5) {
      		cursorposition = cursorposition + 3;
    	}else if (cursorposition == 6) {
      		cursorposition = cursorposition + 3;
    	}else if (cursorposition == 7) {
      		cursorposition = cursorposition + 4;
    	}else if (cursorposition == 8) {
      		cursorposition = cursorposition + 4;
      		e1=object.value.indexOf(')');
      		e2=object.value.indexOf('-');
      		if (e1>-1 && e2>-1){
        		if (e2-e1 == 4) {
          			cursorposition = cursorposition - 1
        		}
      		}
    	}else if (cursorposition == 9){
      		cursorposition = cursorposition + 4;
    	}else if (cursorposition < 11){
      		cursorposition = cursorposition + 3;
    	}else if (cursorposition == 11) {
      		cursorposition = cursorposition + 1;
    	}else if (cursorposition == 12) {
      		cursorposition = cursorposition + 1;
    	}else if (cursorposition >= 13) {
      		cursorposition = cursorposition;
    	}
    	var txtRange = object.createTextRange();
    	txtRange.moveStart( "character", cursorposition);
    	txtRange.moveEnd( "character", cursorposition - object.value.length);
    	txtRange.select();
  	}
}

function ParseChar(sStr, sChar){
  	if (sChar.length == null){
    	zChar = new Array(sChar);
  	}else{
		zChar = sChar;
  	}
  	for (i=0; i<zChar.length; i++){
    	sNewStr = "";
    	var iStart = 0;
    	var iEnd = sStr.indexOf(sChar[i]);
    	while (iEnd != -1){
      		sNewStr += sStr.substring(iStart, iEnd);
      		iStart = iEnd + 1;
      		iEnd = sStr.indexOf(sChar[i], iStart);
    	}
    	sNewStr += sStr.substring(sStr.lastIndexOf(sChar[i]) + 1, sStr.length);
    	sStr = sNewStr;
  	}
 	return sNewStr;
}