var headerTimeout = 25000;

function firstLoad()
{
	hideOverlay();
	setTimeout("changeHeader();", headerTimeout);
}
function changeHeader()
{
	setTimeout("changeHeader();", headerTimeout);
	var random = Math.random();
	random = (random * 4) % 4;
	random = Math.round(random);
	//alert(random);
	if (random > 4 || random < 1) random = 2;
	document.getElementById("headerImage").src='images/header'+random+'.jpg';
}
function setDefault()
{
	showOverlay();
	document.getElementById("success").style.display = "none";
	document.getElementById("msg").style.display = "none";
	document.ticket.reset();
	document.follow.reset();
	document.getElementById("div_openTicket").style.display = "block";
	document.getElementById("div_followTicket").style.display = "block";
	hideOverlay();
}
function validateString(element)
{
	var myElement = document.getElementById(element);
        var str = myElement.value;
	if (str == "")
	{
		myElement.className = 'input_incorrect';
		return false;
	}
	else
	{
		myElement.className = 'input_verified';
		return true;
	}
}
function validateTicket(element)
{
	var myElement = document.getElementById(element);
        var str = myElement.value;
	if (str == "")
	{
		myElement.className = 'input_incorrect';
		return false;
	}
	else
	{
		if (str == "")
		{
			myElement.className = 'input_incorrect';
			return false;
		}
		else
		{
			myElement.className = 'input_verified';
			return true;
		}
	}
}
function validateNumber(element)
{
	var myElement = document.getElementById(element);
        var str = myElement.value;
	if (str == '' || str == null || !checkInternationalPhone(str))
	{
		myElement.className = 'input_incorrect';
		return false;
	}
	else
	{
		myElement.className = 'input_verified';
		return true;
	}
}
function validateEmail(element)
{
	var myElement = document.getElementById(element);
        var str = myElement.value;
	if (str == '' || str == null || !echeck(str))
	{
		myElement.className = 'input_incorrect';
		return false;
	}
	else
	{
		myElement.className = 'input_verified';
		return true;
	}
}


function echeck(str)
{
		var at="@"
		var dot="."
		var lat=str.indexOf(at)
		var lstr=str.length
		var ldot=str.indexOf(dot)
		if (str.indexOf(at)==-1){
		   return false
		}
		if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr){
		   return false
		}
		if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr){
		    return false
		}
		 if (str.indexOf(at,(lat+1))!=-1){
		    return false
		 }
		 if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot){
		    return false
		 }
		 if (str.indexOf(dot,(lat+2))==-1){
		    return false
		 }
		 if (str.indexOf(" ")!=-1){
		    return false
		 }
 		 return true					
	}
var digits = "0123456789";
var phoneNumberDelimiters = "()- ";
var validWorldPhoneChars = phoneNumberDelimiters + "+";
var minDigitsInIPhoneNumber = 7;
function isInteger(s)
{   var i;
    for (i = 0; i < s.length; i++)
    {   
        var c = s.charAt(i);
        if (((c < "0") || (c > "9"))) return false;
    }
    return true;
}
function trim(s)
{   var i;
    var returnString = "";
    for (i = 0; i < s.length; i++)
    {   
        var c = s.charAt(i);
        if (c != " ") returnString += c;
    }
    return returnString;
}
function stripCharsInBag(s, bag)
{   var i;
    var returnString = "";
    for (i = 0; i < s.length; i++)
    {   
        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);
}

function showOverlay()
{
    var h = document.body.clientHeight;
    document.getElementById("overlay").style.height = h + "px";
    document.getElementById("overlay").style.display = "block";
    document.getElementById("loading").style.display = "block";
}
function hideOverlay()
{
    document.getElementById("overlay").style.display = "none";
    document.getElementById("loading").style.display = "none";
}