// JavaScript Document


// Date Validator

//var dtCh= "/";   --> if you want separator using '/'
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)
	
	//This is if you want MM-DD-YYYY format  - Daniel Hartanto's note
	//var strMonth=dtStr.substring(0,pos1)
	//var strDay=dtStr.substring(pos1+1,pos2)
	//var strYear=dtStr.substring(pos2+1)
	
	// This will allow you to have YYYY-MM-DD format - Daniel Hartanto's note
	var strYear=dtStr.substring(0,pos1)
	var strMonth=dtStr.substring(pos1+1,pos2)
	var strDay=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 : yyyy-mm-dd")
		return false
	}
	if (strMonth.length<1 || month<1 || month>12){
		alert("Please enter a valid month")
		return false
	}
	if (strDay.length<1 || day<1 || day>31 || (month==2 && day>daysInFebruary(year)) || day > daysInMonth[month]){
		alert("Please enter a valid day")
		return false
	}
	if (strYear.length != 4 || year==0 || year<minYear || year>maxYear){
		alert("Please enter a valid 4 digit year between "+minYear+" and "+maxYear)
		return false
	}
	if (dtStr.indexOf(dtCh,pos2+1)!=-1 || isInteger(stripCharsInBag(dtStr, dtCh))==false){
		alert("Please enter a valid date")
		return false
	}
return true
}

function ValidateDateForm(fieldName){
	var dt=fieldName
	if (isDate(dt.value)==false){
		dt.focus()
		return false
	}
    return true
 }

// Email Validator
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 E-mail ID")
		   return false
		}

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

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

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

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

		 if (str.indexOf(dot,(lat+2))==-1){
		    alert("Invalid E-mail ID")
		    return false
		 }
		
		 if (str.indexOf(" ")!=-1){
		    alert("Invalid E-mail ID")
		    return false
		 }

 		 return true					
	}

function ValidateEmailForm(fieldName2){
	var emailID=fieldName2
	
	if ((emailID.value==null)||(emailID.value=="")){
		alert("Please Enter your Email ID")
		emailID.focus()
		return false
	}
	if (echeck(emailID.value)==false){
		emailID.value=""
		emailID.focus()
		return false
	}
	return true
 }
 
 
 
 // Gender radio button checked checker
function radio_button_checker(fieldName3)
{
	

	
// set var radio_choice to false
var radio_choice = false;

// Loop from zero to the one minus the number of radio button selections
for (counter = 0; counter < fieldName3.length; counter++)
{
// If a radio button has been selected it will return true
// (If not it will return false)
if (fieldName3[counter].checked)
radio_choice = true; 
}

if (!radio_choice)
{
// If there were no selections made display an alert box 
alert("Please select a gender.")
return (false);
}
return (true);
}

// for reserve showtime
function radio_button_checker_showtime(fieldName3)
{
	

	
// set var radio_choice to false
var radio_choice = false;

// Loop from zero to the one minus the number of radio button selections
for (counter = 0; counter < fieldName3.length; counter++)
{
// If a radio button has been selected it will return true
// (If not it will return false)
if (fieldName3[counter].checked)
radio_choice = true; 
}

if (!radio_choice)
{
// If there were no selections made display an alert box 
alert("Please select a showtime.")
return (false);
}
return (true);
}

 
 // Required Field Validation

function validate_required(field,alerttxt)
{
	with (field)
	{
	if (value==null||value==""||(value.substring(0,1)==" "))
	  {alert(alerttxt);return false;}
	else {return true}
	}
}

function validate_form(thisform)
{
	with (thisform)
	{
	if (validate_required(fname,"First Name must be filled out and it cannot start with a white space!")==false)
	  {fname.focus();return false;}
	
	
	if (validate_required(lname,"Last Name must be filled out and it cannot start with a white space!")==false)
	  {lname.focus();return false;}
	  	

	if (validate_required(city,"City must be filled out and it cannot start with a white space!")==false)
	  {city.focus();return false;}
	
	if (validate_required(state,"State must be selected. Non US Resident choose N/A !")==false)
	  {state.focus();return false;}
	  
	if (validate_required(nationality,"Nationality must be selected!")==false)
	  {nationality.focus();return false;}
	  
    if (validate_required(country,"Country must selected. Please select your country !")==false)
	  {country.focus();return false;}

	if (validate_required(usrname,"Username must be filled out and it cannot start with a white space!")==false)
	  {usrname.focus();return false;}
	
	
	if (validate_required(pwd,"Password must be filled out and it cannot start with a white space!")==false)
	  {pwd.focus();return false;}
	
	
	if (validate_required(secret_q,"Secret Question must be filled out and it cannot start with a white space!")==false)
	  {secret_q.focus();return false;}
	
	
	if (validate_required(secret_a,"Secret Answer must be filled out and it cannot start with a white space!")==false)
	  {secret_a.focus();return false;}
	}
	
}

 
 // Implement All
 
 function doAll(fieldA,fieldB,formIni,fieldC) {
	 
	 if (ValidateDateForm(fieldA) == false){
		 return false
	 }
	 
	 if (ValidateEmailForm(fieldB) == false){
		 return false
	 }
	 
	 if (validate_form(formIni) == false){
		 return false
	 }
	 
	 if (radio_button_checker(fieldC) == false){
		 return false
	 }
	 
	 return true
 }

// Image button swapper

function swapImage(objname,image) {
		objname.src = image;
		return true;
	}