// JavaScript Document
 function handleHttpResponse()
	    {    
        if (http.readyState == 4) 
			{ 
              if(http.status==200)
			  { 
                  var results=http.responseText; 				 
					if(results<1)	{
					alert('Sorry! The nickname already exists, try another name.') ;
					return false;
					}	else if (results>0)	{
					alert('Nick name has been saved. Thank you!');
					document.form1.submit();
					
					}		
			  
              } 
            } 
        } 
		
function getHTTPObject() { 
  var xmlhttp; 

  if(window.XMLHttpRequest){ 
    xmlhttp = new XMLHttpRequest(); 
  } 
  else if (window.ActiveXObject){ 
    xmlhttp=new ActiveXObject("Microsoft.XMLHTTP"); 
    if (!xmlhttp){ 
        xmlhttp=new ActiveXObject("Msxml2.XMLHTTP"); 
    } 
} 
  return xmlhttp; 
} 
var http = getHTTPObject(); // We create the HTTP Object 
function validate()
{
	
if(document.form1.fname.value=="")
	{	
	alert("Name must be filled out!");
	document.form1.fname.focus();
	return false;
	}
	
if(document.form1.sname.value=="")
	{	
	alert("Surame must be filled out!");
	document.form1.sname.focus();
	return false;
	}
	
 var dt=document.form1.month.value + "/" + document.form1.date.value + "/" + document.form1.year.value;
	  
		if (isDate(dt)==false)
		{return false;}	
		

if(document.form1.license.value=="")
	{	
	alert("License must be filled out!");
	document.form1.license.focus();
	return false;
	}
	
if(document.form1.phone0.value=="")
	{		
	alert("Phone must be filled out!");
	document.form1.phone0.focus();
	return false;
	}
	else if (document.form1.phone0.value!="")
		{
			if(isNaN(document.form1.phone0.value))
			{
			document.form1.phone0.value='';
			alert("Enter numbers only");
			document.form1.phone0.focus();
			return false;
			}
		}

if(document.form1.phone1.value=="")
	{	
	alert("Phone must be filled out!");
	document.form1.phone1.focus();
	return false;
	}	
	else if (document.form1.phone1.value!="")
		{
			if(isNaN(document.form1.phone1.value))
			{
			document.form1.phone1.value='';
			alert("Enter numbers only");
			document.form1.phone1.focus();
			return false;
			}
		}

if(document.form1.email.value=="")
		{
			alert("Email must be filled out!");
			document.form1.email.focus();
			return false;
		}
	else if (document.form1.email.value!="")
		{
			if(!echeck(document.form1.email.value))
			{
				document.form1.email.value='';
				document.form1.email.focus();
			return false;
			}
		}	
	
if(document.form1.add.value=="")
	{	
	alert("Address must be filled out!");
	document.form1.add.focus();
	return false;
	}	
	
if(document.form1.suburb.value=="")
	{	
	alert("Suburb must be filled out!");
	document.form1.suburb.focus();
	return false;
	}	
	
if(document.form1.zip.value=="")
    {
	alert("Postcode must be filled out!");
	document.form1.zip.value="";
	document.form1.zip.focus();
	return false;
    }
	if(isNaN(document.form1.zip.value))
    {
	alert("Enter Numericals for Postcode");
	document.form1.zip.value="";
	document.form1.zip.focus();
	return false; 
    }	
	
	
if(document.form1.university.value=="")
	{	
	alert("University name must be filled out!");
	document.form1.university.focus();
	return false;
	}
	var c = 'order[]' ;
 
 if (radio(c, "Check your order!")==false)
	    {
		document.getElementById('order').focus();
		return false;
		}	
		
	
if(document.form1.knowledge.value=="")
	{	
	alert("Select your knowledge");
	document.form1.knowledge.focus();
	return false;
	}
if(document.form1.nominate.value=="")
	{
		alert("Nickname should be filled out!");
		document.form1.nominate.focus();
		return false;
	}
else if (document.form1.nominate.value!="")
	{
		if(!duplicateName(document.form1.nominate.value))
		{
		return false;
		}
	}					
return true;
}	

//Ajax validation*******************************************************

function duplicateName(name) 
		{		
		//document.getElementById(dName).style.visibility='visible';				
		//alert(name) ;		   			
            http.open("GET", "duplicate_name.php?name="+name , true);
            http.onreadystatechange = handleHttpResponse;
            http.send(null); 			
        } 
		
//*************************************************************************

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)
			{
			   alert("Invalid email address")
			   return false
			}

		if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr)
			{
			   alert("Invalid email address")
			   return false
			}

		if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr)
			{
				alert("Invalid email address")
				return false
			}

		 if (str.indexOf(at,(lat+1))!=-1)
			 {
				alert("Invalid email address")
				return false
			 }

		 if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot)
			 {
				alert("Invalid email address")
				return false
			 }

		 if (str.indexOf(dot,(lat+2))==-1)
			 {
				alert("Invalid email address")
				return false
			 }
		
		 if (str.indexOf(" ")!=-1)
			 {
				alert("Invalid email address")
				return false
			 }
		 return true;
		 }
		 
		 
		 
//date validation --------------------------------------
function isExpiryDate(month, year, alerttxt)
 {
// alert(year);
  today = new Date();
expiry = new Date(year, month);
//alert(expiry);
if (today.getTime() > expiry.getTime())
{
alert(alerttxt)
return false;
}
else
{
//alert("success")
return true;
}
}

//---------------------------------------------------------

//------------------------------Date validation mm/dd/yyyy----------------
var dtCh= "/";
var minYear=1900;
var maxYear=2100;
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++){   
        var c = s.charAt(i);
        if (bag.indexOf(c) == -1) returnString += c;
    }
    return returnString;
}

function daysInFebruary (year){
	// February has 29 days in any year evenly divisible by four,
    // EXCEPT for centurial years which are not also divisible by 400.
    return (((year % 4 == 0) && ( (!(year % 100 == 0)) || (year % 400 == 0))) ? 29 : 28 );
}
function DaysArray(n) {
	for (var i = 1; i <= n; i++) {
		this[i] = 31
		if (i==4 || i==6 || i==9 || i==11) {this[i] = 30}
		if (i==2) {this[i] = 29}
   } 
   return this
}

function isDate(dtStr){
	var daysInMonth = DaysArray(12)
	var pos1=dtStr.indexOf(dtCh)
	var pos2=dtStr.indexOf(dtCh,pos1+1)
	var strMonth=dtStr.substring(0,pos1)
	var strDay=dtStr.substring(pos1+1,pos2)
	var strYear=dtStr.substring(pos2+1)
	strYr=strYear
	if (strDay.charAt(0)=="0" && strDay.length>1) strDay=strDay.substring(1)
	if (strMonth.charAt(0)=="0" && strMonth.length>1) strMonth=strMonth.substring(1)
	for (var i = 1; i <= 3; i++) {
		if (strYr.charAt(0)=="0" && strYr.length>1) strYr=strYr.substring(1)
	}
	month=parseInt(strMonth)
	day=parseInt(strDay)
	year=parseInt(strYr)
	if (pos1==-1 || pos2==-1){
		alert("The date format should be : mm/dd/yyyy")
		return false
	}
	
	if (isNaN(day) == true || strDay.length<1 || day<1 || day>31 || (month==2 && day>daysInFebruary(year)) || day > daysInMonth[month]){
		alert("Please enter a valid day")
		document.getElementById('fdate').value="";
		document.getElementById('fdate').focus();
		return false
	}
	
	if (isNaN(month) == true || strMonth.length<1 || month<1 || month>12){
		alert("Please enter a valid month")
		document.getElementById('fmonth').value="";
		document.getElementById('fmonth').focus();
		return false
	}
	
	if (isNaN(year) == true || strYear.length != 4 || year==0 || year<minYear || year>maxYear){
		alert("Please enter a valid 4 digit year between "+minYear+" and "+maxYear)
		document.getElementById('fyear').value="";
		document.getElementById('fyear').focus();
		return false
	}
	if (dtStr.indexOf(dtCh,pos2+1)!=-1 || isInteger(stripCharsInBag(dtStr, dtCh))==false){
		alert("Please enter a valid date")
		return false
	}
return true
}


//-----------------------------------------------------		

//for autotab ----------------------------------------------------

function autotab(current,to){
    if (current.getAttribute && 
      current.value.length==current.getAttribute("maxlength")) {
        to.focus() 
        }
}

//----------------------------------------------------------------- 

//For radio boxes
 function radio(radname,alerttxt)
{ 
//alert(chkname);
   var inputs = document.getElementsByTagName("input");
   a=0;
   for(var t = 0;t < inputs.length;t++){
     if(inputs[t].type == "radio" && inputs[t].checked == true && inputs[t].name===radname)
	 {	
       a=1;	   
	 }	   
   } 
   //alert(a) ;
   if(a==0)
   {
   alert(alerttxt);
   return false ;
	}else 
	{
	return true ;
	}
}

//-----------------------------------------------------------------