//////////// =============== LOGIN VALIDATION ===================
function loginvalidate(theform){   //validate function

var chklogin = /^[A-Za-z0-9]+$/;
var chkpasswd = /^[A-Za-z0-9\.@#^\_!$]+$/;


	var login = theform.loginid.value;
	var passwd = theform.passwd.value;
	var errors = [];

 if ((!chkminlength(login, 7)) || (!chkmaxlength(login, 10)) || (!chklogin.test(login))) {
	errors[errors.length] = "Login ID";
 }

 if ((!chkminlength(passwd, 8)) || (!chkmaxlength(passwd, 25)) || (!chkpasswd.test(passwd))) {
	errors[errors.length] = "Password";
 }

	if (errors.length > 0) {
		reportErrors(errors);
		return false;
	} else {
		return true;
	}
}  // validate function END
//////////// =============== end LOGIN VALIDATION ===================


//////////// =============== RECOVER PASS VALIDATION ===================
function recpass(theform){   //validate function
	var chkalpha = /^[A-Za-z ]+$/;
	var chkalphadot = /^[A-Za-z\. ]+$/;
	var chknumbers = /^\d{4}$/;  // 4 used for year of passing
	var chkmobileno = /^[0-9,\- ]*$/;
	//var chkemailid = /^([a-zA-Z0-9])+([a-zA-Z0-9\._-])*@([a-zA-Z0-9_-])+([a-zA-Z0-9\._-]+)+$/ ;
	var chkemailid = /^[^0-9][A-z0-9_]+([.][A-z0-9_]+)*[@][A-z0-9_]+([.][A-z0-9_]+)*[.][A-z]{2,4}$/;
	var ck_password = /^[A-Za-z0-9!@#$%^&*()_]{6,20}$/;
	var chkrollno = /^[a-zA-Z0-9\-]*$/;
	var chkappno = /^[0-9]*$/;

	var cname = theform.cname.value;
	var mname = theform.mname.value;
	var dob = theform.pwddob.value;

	var mobileno = theform.pwdmobile.value;
	var appno = theform.appno.value;
	var errors = [];

 if ((!chkminlength(cname, 3)) || (!chkmaxlength(cname, 50)) || (!chkalpha.test(cname))) {
	errors[errors.length] = "Candidate Name.";
 }
 if ((!chkminlength(mname, 3)) || (!chkmaxlength(mname, 50)) || (!chkalphadot.test(mname))) {
	errors[errors.length] = "Mother's Name.";
 }
if (!isDate(dob)) {        // DOB
	errors[errors.length] = "Date of Birth.";
}

if ((!chkminlength(mobileno, 10)) || (!chkmaxlength(mobileno, 11))) {
	errors[errors.length] = "Mobile No.";
}

 if ((!chkminlength(appno, 1)) || (!chkmaxlength(appno, 10)) || (!chkappno.test(appno))) {
	errors[errors.length] = "Registration No.";
 }

	if (errors.length > 0) {
		reportErrors(errors);
		return false;
	} else {
		return true;
	}
}  // validate function END
//////////// =============== end RECOVER PASS VALIDATION ===================

//////////// =============== CANDIDATE UPDATE INFO FORM VALIDATION ===================
function validateprofupdate(theform) {   //validate function


	var chkalpha = /^[A-Za-z ]+$/;
	var chkalphadot = /^[A-Za-z\. ]+$/;
	var chknumbers = /^\d{4}$/;  // 4 used for year of passing
	var chkmobileno = /^[0-9,\- ]*$/;
	//var chkemailid = /^([a-zA-Z0-9])+([a-zA-Z0-9\._-])*@([a-zA-Z0-9_-])+([a-zA-Z0-9\._-]+)+$/ ;
	var chkemailid = /^[^0-9][A-z0-9_]+([.][A-z0-9_]+)*[@][A-z0-9_]+([.][A-z0-9_]+)*[.][A-z]{2,4}$/;
	var chknumbersmarks = /^\d{1,5}$/;

	var chkpinnumbers = /^[0-9]{1,6}$/;

	var cname = theform.cname.value;
	var fname = theform.fname.value;
	var mname = theform.mname.value;
	var dob = theform.dob.value;

	var nationality = theform.nationality.value;
	var caddrs = theform.caddrs.value;
	var ccity = theform.ccity.value;
	var cdist = theform.cdist.value;
	var cstate = theform.cstate.value;
	var cpin = theform.cpin.value;

	var chkpaddrs = theform.chkpaddrs;
	var mobileno = theform.mobileno.value;
	var emailid = theform.emailid.value;

	var errors = [];


 if ((!chkminlength(cname, 3)) || (!chkmaxlength(cname, 50)) || (!chkalpha.test(cname))) {
	errors[errors.length] = "Candidate Name.";
 }
 if ((!chkminlength(fname, 3)) || (!chkmaxlength(fname, 50)) || (!chkalphadot.test(fname))) {
	errors[errors.length] = "Father's Name.";
 }

 if ((!chkminlength(mname, 3)) || (!chkmaxlength(mname, 50)) || (!chkalphadot.test(mname))) {
	errors[errors.length] = "Mother's Name.";
 }

if ((!chkminlength(ccity, 3)) || (!chkmaxlength(ccity, 80)) || (!chkalphadot.test(ccity))) {
	errors[errors.length] = "Correspondence Address(City).";
}

if ((!chkminlength(cdist, 2)) || (!chkmaxlength(cdist, 80)) || (!chkalphadot.test(cdist))) {
	errors[errors.length] = "Correspondence Address(Dist.).";
}

if (cstate < 1) {
	errors[errors.length] = "Correspondence Address(State).";
}

if  (!chkpinnumbers.test(cpin)) {
	errors[errors.length] = "Correspondence Address(Pincode).";
}


if (!chkblankdata(emailid)) {  // check only if user has entered some data
	if ((!chkminlength(emailid, 8)) || (!chkmaxlength(emailid, 130))  || (!chkemailid.test(emailid))) {
		errors[errors.length] = "Email id.";
	}
}

if (!chkblankdata(mobileno))  { // check only if user has entered some data
	if ((!chkminlength(mobileno, 6)) || (!chkmaxlength(mobileno, 50)) || (!chkmobileno.test(mobileno))) {
		errors[errors.length] = "Phone No./Mobile No.";
	}
}

if (!isDate(dob)) {        // DOB
	errors[errors.length] = "Date of Birth.";
}

if ((!theform.gender[0].checked) && (!theform.gender[1].checked) ) {
	errors[errors.length] = "Gender.";
}

if ((!chkminlength(nationality, 1)) || (!chkmaxlength(nationality, 50))  ) {
	errors[errors.length] = "Nationality.";
}



	if (errors.length > 0) {
		reportErrors(errors);
		return false;
	} else {
		////////////  return false;
		return true;
	}
}  // validate function END


//////////// =============== end CANDIDATE UPDATE INFO FORM VALIDATION ===================

//////////// =============== REGISTRATION FORM VALIDATION ===================
function validatereg(theform) {   //validate function


	var chkalpha = /^[A-Za-z ]+$/;
	var chkalphadot = /^[A-Za-z\. ]+$/;
	var chknumbers = /^\d{4}$/;  //
	var chkmobileno = /^[0-9,\- ]*$/;
	//var chkemailid = /^([a-zA-Z0-9])+([a-zA-Z0-9\._-])*@([a-zA-Z0-9_-])+([a-zA-Z0-9\._-]+)+$/ ;
	var chkemailid = /^[^0-9][A-z0-9_]+([.][A-z0-9_]+)*[@][A-z0-9_]+([.][A-z0-9_]+)*[.][A-z]{2,4}$/;
	var ck_password = /^[A-Za-z0-9!@#$%^&*()_]{6,20}$/;
	var chknumbersmarks = /^\d{1,5}$/;
	var chkrollno = /^[a-zA-Z0-9\-]*$/;

	var chkpinnumbers = /^\d{6}$/;

	var cname = theform.cname.value;
	var fname = theform.fname.value;
	var mname = theform.mname.value;
	var dob = theform.dob.value;
	var mobileno = theform.mobileno.value;
	var emailid = theform.emailid.value;

	var catcode = theform.catcode.value ;
	var subcatcode1 = theform.subcatcode1.value ;
	var subcatcode2 = theform.subcatcode2.value ;
	var subcatcode3 = theform.subcatcode3.value ;
	var subcatcode4 = theform.subcatcode4.value ;

	var errors = [];

 if ((!chkminlength(cname, 3)) || (!chkmaxlength(cname, 50)) || (!chkalpha.test(cname))) {
	errors[errors.length] = "Candidate Name.";
 }
 if ((!chkminlength(fname, 3)) || (!chkmaxlength(fname, 50)) || (!chkalphadot.test(fname))) {
	errors[errors.length] = "Father's Name.";
 }

 if ((!chkminlength(mname, 3)) || (!chkmaxlength(mname, 50)) || (!chkalphadot.test(mname))) {
	errors[errors.length] = "Mother's Name.";
 }

if (!chkblankdata(emailid)) {
	if ((!chkminlength(emailid, 8)) || (!chkmaxlength(emailid, 130))  || (!chkemailid.test(emailid))) {
		errors[errors.length] = "Email id.";
	}
}

if (!chkblankdata(mobileno))  {
	if ((!chkminlength(mobileno, 6)) || (!chkmaxlength(mobileno, 50)) || (!chkmobileno.test(mobileno))) {
		errors[errors.length] = "Phone No./Mobile No.";
	}
}

if (!chkminmaxval(catcode, 1, 5)) {
	errors[errors.length] = "Category.";
}

if ( (!chkminmaxval(subcatcode1, 0,2)) || (!chkminmaxval(subcatcode2, 0,3)) || (!chkminmaxval(subcatcode3, 0,2)) || (!chkminmaxval(subcatcode4,0,2)) ) {
	errors[errors.length] = "Sub-Category.";
}

if (!isDate(dob)) {        // DOB
	errors[errors.length] = "Date of Birth.";
}



if (errors.length > 0) {
	reportErrors(errors);
	return false;
} else {
	////////////  return false;
	return true;
}
}  // validate function END


//////////// =============== end REGISTRATION FORM VALIDATION ===================

//////////// =============== CHANGE PASSWORD VALIDATION ===================

function validatePassword(pw, options) {
	// default options (allows any password)
	var o = {
		lower:    0,
		upper:    0,
		alpha:    0, /* lower + upper */
		numeric:  0,
		special:  0,
		length:   [0, Infinity],
		custom:   [ /* regexes and/or functions */ ],
		badWords: [],
		badSequenceLength: 0,
		noQwertySequences: false,
		noSequential:      false
	};

	for (var property in options) {
		o[property] = options[property];
	}

	var	re = {
			lower:   /[a-z]/g,
			upper:   /[A-Z]/g,
			alpha:   /[A-Z]/gi,
			numeric: /[0-9]/g,
			special: /[^*@#!$]/g
		},
		rule, i;

	// enforce min/max length
	if (pw.length < o.length[0] || pw.length > o.length[1])
		return false;

	// enforce lower/upper/alpha/numeric/special rules
	for (rule in re) {
		if ((pw.match(re[rule]) || []).length < o[rule]) {
			return false;
			}
	}

	// enforce word ban (case insensitive)
	for (i = 0; i < o.badWords.length; i++) {
		if (pw.toLowerCase().indexOf(o.badWords[i].toLowerCase()) > -1) {
			return false;
		}
	}

	// enforce the no sequential, identical characters rule
	if (o.noSequential && /([\S\s])\1/.test(pw)) {
		return false;
	}
	// enforce alphanumeric/qwerty sequence ban rules
	if (o.badSequenceLength) {
		var	lower   = "abcdefghijklmnopqrstuvwxyz",
			upper   = lower.toUpperCase(),
			numbers = "0123456789",
			qwerty  = "qwertyuiopasdfghjklzxcvbnm",
			start   = o.badSequenceLength - 1,
			seq     = "_" + pw.slice(0, start);
		for (i = start; i < pw.length; i++) {
			seq = seq.slice(1) + pw.charAt(i);
			if (
				lower.indexOf(seq)   > -1 ||
				upper.indexOf(seq)   > -1 ||
				numbers.indexOf(seq) > -1 ||
				(o.noQwertySequences && qwerty.indexOf(seq) > -1)
			) {
				//alert("retunr4");
				return false;
			}
		}
	}

	// enforce custom regex/function rules
	for (i = 0; i < o.custom.length; i++) {
		rule = o.custom[i];
		if (rule instanceof RegExp) {
			if (!rule.test(pw))
				return false;
		} else if (rule instanceof Function) {
			if (!rule(pw))
				return false;
		}
	}

	// great success!
	return true;
}


//////////// =============== end CHANGE PASSWORD VALIDATION ===================


//////////// =============== UPLOAD PHOTOGRAPH VALIDATION ===================

function photovalidate(theform) {   // validate function
	var photograph = theform.photograph.value;

	if (!chkminlength(photograph, 1))
	 {
	  alert("Select Photograph.");
	  theform.photograph.focus();
	  return false;
	}

	var filext = "";  // get file extension
	var filename = photograph.toLowerCase();

	filext = filename.lastIndexOf('.jpg');
	if (filext == -1) {
	  filext = filename.lastIndexOf('.jpeg') ;
	  if (filext == -1) {
		   filext = filename.lastIndexOf('.gif') ;
		   if (filext == -1) {
				filext = filename.lastIndexOf('.png') ;
				 if (filext == -1) {
					alert("Upload Only jpg/jpeg/gif/png File.");
					theform.photograph.focus();
					return false;
				 }
		   }
		}
	}

//	if (chkimagesize(photograph) == false) {
//		return false;
//	}

return true;

}  // validate function end


//////////// ============= UPLOAD PHOTOGRAPH VALIDATION end =================




//////////// =============== GENERAL FUNCTIONS ===================

function reportErrors(errors){
	 var msg = "Please Enter Valid Data for:";
	 for (var i = 0; i < errors.length; i++) {
	 var numError = i + 1;

	 msg += "\n" + numError + ". " + errors[i];
	}
	alert(msg);
	return false;
}

function chkminlength(chkstr, minlen){
	chkstr= trim(chkstr);
	if (chkstr.length < minlen)
		return false;
	else
		return true;
}

function chkmaxlength(chkstr, maxlen){
	chkstr= trim(chkstr);
	if (chkstr.length > maxlen)
		return false;
	else
		return true;
}

function chkminmax(chkstr, minlen, maxlen){
	chkstr= trim(chkstr);
	if ((chkstr.length < minlen) || (chkstr.length > maxlen))
		return false;
	else
		return true;
}

function chkminmaxval(chkstr, minval, maxval) {
	if (isInteger(chkstr)== false)
		return false;

	if ((chkstr < minval) || (chkstr > maxval))
		return false;
	else
		return true;
}


// trim functions
function trim(strtotrim) {
	return strtotrim.replace(/^\s+|\s+$/g,"");
}

function ltrim(strtotrim) {
	return strtotrim.replace(/^\s+/,"");
}
function rtrim(strtotrim) {
	return strtotrim.replace(/\s+$/,"");
}

// trim functions END


function chkblankdata(chkstr){
	chkstr= trim(chkstr);
	if (chkstr.length < 1)
		return true;
	else
		return false;
}



// check valid date of birth
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 dtCh= "/";
	var minYear= 1974;
	var maxYear= 2006;
	var daysInMonth = DaysArray(12);
	var pos1=dtStr.indexOf(dtCh);
	var pos2=dtStr.indexOf(dtCh,pos1+1);
//	var strMonth=dtStr.substring(0,pos1);    // if format is mm/dd/yyyy
//	var strDay=dtStr.substring(pos1+1,pos2); // if format is mm/dd/yyyy

var strDay=dtStr.substring(0,pos1);    // if format is dd/mm/yyyy
var strMonth=dtStr.substring(pos1+1,pos2);  // if format is dd/mm/yyyy

	var strYear=dtStr.substring(pos2+1);

	var doberrs = "";
	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);

	/////alert(day + '   ' + month) ;
	if (pos1==-1 || pos2==-1){
	//	 alert("The date format should be : mm/dd/yyyy")
		 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(minYear + ' ' + maxYear);
		// doberrs = "Date of Birth (enter year between "+minYear+" and "+maxYear+")"
//		alert("Warning! 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;
}
// check valid date of birth END



function chkimagesize(imagesrc) { // function to check image height, width
	imgobj = new Image() ;
	imgobj.src = imagesrc ;

	alert(imgobj.height);
	if(imgobj.height > 350 ) {
		return false;
	}
	if(imgobj.width  > 250 ) {
		return false;
	}
	return true;
}  // function to check image height, width END


//////////// =============== end GENERAL FUNCTIONS ===================