// version: beta
// created: 2005-08-30
// updated: 2005-08-31
// mredkj.com
function extractNumber(obj, decimalPlaces, allowNegative)
{
	var temp = obj.value;
	
	// avoid changing things if already formatted correctly
	var reg0Str = '[0-9]*';
	if (decimalPlaces > 0) {
		reg0Str += '\\.?[0-9]{0,' + decimalPlaces + '}';
	} else if (decimalPlaces < 0) {
		reg0Str += '\\.?[0-9]*';
	}
	reg0Str = allowNegative ? '^-?' + reg0Str : '^' + reg0Str;
	reg0Str = reg0Str + '$';
	var reg0 = new RegExp(reg0Str);
	if (reg0.test(temp)) return true;

	// first replace all non numbers
	var reg1Str = '[^0-9' + (decimalPlaces != 0 ? '.' : '') + (allowNegative ? '-' : '') + ']';
	var reg1 = new RegExp(reg1Str, 'g');
	temp = temp.replace(reg1, '');

	if (allowNegative) {
		// replace extra negative
		var hasNegative = temp.length > 0 && temp.charAt(0) == '-';
		var reg2 = /-/g;
		temp = temp.replace(reg2, '');
		if (hasNegative) temp = '-' + temp;
	}
	
	if (decimalPlaces != 0) {
		var reg3 = /\./g;
		var reg3Array = reg3.exec(temp);
		if (reg3Array != null) {
			// keep only first occurrence of .
			//  and the number of places specified by decimalPlaces or the entire string if decimalPlaces < 0
			var reg3Right = temp.substring(reg3Array.index + reg3Array[0].length);
			reg3Right = reg3Right.replace(reg3, '');
			reg3Right = decimalPlaces > 0 ? reg3Right.substring(0, decimalPlaces) : reg3Right;
			temp = temp.substring(0,reg3Array.index) + '.' + reg3Right;
		}
	}
	
	obj.value = temp;
}
function blockNonNumbers(obj, e, allowDecimal, allowNegative)
{
	var key;
	var isCtrl = false;
	var keychar;
	var reg;
		
	if(window.event) {
		key = e.keyCode;
		isCtrl = window.event.ctrlKey
	}
	else if(e.which) {
		key = e.which;
		isCtrl = e.ctrlKey;
	}
	
	if (isNaN(key)) return true;
	
	keychar = String.fromCharCode(key);
	
	// check for backspace or delete, or if Ctrl was pressed
	if (key == 8 || isCtrl)
	{
		return true;
	}

	reg = /\d/;
	var isFirstN = allowNegative ? keychar == '-' && obj.value.indexOf('-') == -1 : false;
	var isFirstD = allowDecimal ? keychar == '.' && obj.value.indexOf('.') == -1 : false;
	
	return isFirstN || isFirstD || reg.test(keychar);
}

function onlyNumbers(e)
	{
		var browser = navigator.appName;
		
		if(browser == "Netscape"){
			var keycode = e.which;		
			if((keycode >=48 && keycode <=57) || keycode == 13 || keycode == 8 || keycode == 0)
				return true;
			else
				return false;
		}else{
			if((e.keyCode >=48 && e.keyCode<=57) || e.keycode == 13 || e.keycode == 8 || e.keycode == 0)
				e.returnValue=true;
			else
				e.returnValue=false;		
		}		
	}
	
	
	
	
//AUTO FORMAT TEXTBOX FOR TELEPHONE NUMBER

<!-- 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 -->

var zChar = new Array(' ', '(', ')', '-', '.');
var maxphonelength = 13;
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
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(0,8);
p40 = p40 + "-"

p41 = pp.substring(8,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 <= 5) {
cursorposition = cursorposition + 2
} else if (cursorposition == 6) {
cursorposition = cursorposition + 2
} else if (cursorposition == 7) {
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 < 11) {
cursorposition = cursorposition + 3
} else if (cursorposition == 11) {
cursorposition = cursorposition + 1
} else if (cursorposition >= 12) {
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;
}


//CHARACTERS LIMIT
function limitText(limitField, limitCount, limitNum) {
	if (limitField.value.length > limitNum) {
		limitField.value = limitField.value.substring(0, limitNum);
	} else {
		limitCount.value = limitNum - limitField.value.length;
	}
}
//CHARACTERS LIMIT






//Not Allow any Number values (0-9)
function AlfaNumberic(evt)
{
var charCode = (evt.which) ? evt.which : event.keyCode
//alert(charCode);
if (charCode >= 48 && charCode <= 57)
{
return false;
}
else
{
return true;
}
}




//Filter a file input field with limited allowed extension*******************************************************
function check(file,type){ 
if(!new RegExp('[^/].(?:'+type+')','i').test(file.value)){
var input = document.createElement('input');
input.type = file.type;
input.name = file.name;
input.onchange = new Function("check(this,'"+type+"')");
file.parentNode.replaceChild(input,file);
alert("Incorrect file type. Please use a "+type.replace(/\|/g,' or a ')+" file.");
return false;
}
}
//*****************************************************************************