var defaultEmptyOK = false
//var decimalPointDelimiter = ","
var decimalPointDelimiter = "."
var altDecimalPointDelimiter = "."
var dtCh= "-";

function parseNumber(value) {
	return(new Number(value.replace(/\,/gi,".")));
}

function isEmpty(s)
{   
	return ((s == null) || (s.length == 0))
}

function isDigit (c)
{   
	return ((c >= "0") && (c <= "9"))
}

// isInteger (STRING s [, BOOLEAN emptyOK])
function isInteger (s)
{   
	var i;

    if (isEmpty(s)) 
       if (isInteger.arguments.length == 1) return defaultEmptyOK;
       else return (isInteger.arguments[1] == true);

    for (i = 0; i < s.length; i++)
    {   
        var c = s.charAt(i);

        if (!isDigit(c)) return false;
    }

    return true;
}

// isSignedInteger (STRING s [, BOOLEAN emptyOK])
function isSignedInteger (s)
{   
	if (isEmpty(s)) 
       if (isSignedInteger.arguments.length == 1) return defaultEmptyOK;
       else return (isSignedInteger.arguments[1] == true);

    else {
        var startPos = 0;
        var secondArg = defaultEmptyOK;

        if (isSignedInteger.arguments.length > 1)
            secondArg = isSignedInteger.arguments[1];

        if ( (s.charAt(0) == "-") )
           startPos = 1;    
        return (isInteger(s.substring(startPos, s.length), secondArg))
    }
}

// isFloat (STRING s [, BOOLEAN emptyOK])
function isFloat (s)

{   var i;
    var seenDecimalPoint = false;

    if (isEmpty(s))
       if (isFloat.arguments.length == 1) return defaultEmptyOK;
       else return (isFloat.arguments[1] == true);

    if (s == decimalPointDelimiter || s == altDecimalPointDelimiter) return false;
//    if (s == decimalPointDelimiter)  return false;

    for (i = 0; i < s.length; i++)
    {
        var c = s.charAt(i);

        if ((c == decimalPointDelimiter || c == altDecimalPointDelimiter) && !seenDecimalPoint) seenDecimalPoint = true;
//        if (c == decimalPointDelimiter && !seenDecimalPoint) seenDecimalPoint = true;
        else if (!isDigit(c)) return false;
    }

    return true;
}

// isSignedFloat (STRING s [, BOOLEAN emptyOK])
function isSignedFloat (s)

{   if (isEmpty(s)) 
       if (isSignedFloat.arguments.length == 1) return defaultEmptyOK;
       else return (isSignedFloat.arguments[1] == true);

    else {
        var startPos = 0;
        var secondArg = defaultEmptyOK;

        if (isSignedFloat.arguments.length > 1)
            secondArg = isSignedFloat.arguments[1];

        if ( (s.charAt(0) == "-") )
           startPos = 1;    
        return (isFloat(s.substring(startPos, s.length), secondArg))
    }
}

function validateRequired(field) {

	if(isEmpty(field.value)) {
		alert("Acest camp este necesar!");
		field.focus();
		return false;
	} else {
		return true;
	}
}

function validateLength(field, reqLength) {
    if (!validateRequired(field)) {
        return false;
    } else {
        if (field.value.length != reqLength) {
		        alert("The field has to have exactly" + reqLength + " characters");
		        field.focus();
		        return false;
        } else {
            return true;
        }
    }
}

function validateInteger(field) {

	emptyOk = defaultEmptyOK;

	if (validateInteger.arguments.length > 1) {
	    emptyOk = validateInteger.arguments[1];
	}

	if (!emptyOk && !validateRequired(field)) {
		return false;
	}

	if (!isSignedInteger(field.value, emptyOk)) {
		alert("Please, enter whole number");
		field.focus();
		return false;
	} else {
		return true;
	}
}

function validateFloat(field) {

	emptyOk = defaultEmptyOK;

	if (validateFloat.arguments.length > 1) {
	    emptyOk = validateFloat.arguments[1];
	}
	
	if (!emptyOk && !validateRequired(field)) {
		return false;
	}

	if (!isSignedFloat(field.value, emptyOk)) {
		alert("Please, enter decimal number");
		field.focus();
		return false;
	} else {
		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 isItDate(dtStr){
	var daysInMonth = DaysArray(12)
	var pos1=dtStr.indexOf(dtCh)
	var pos2=dtStr.indexOf(dtCh,pos1+1)
	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("Please, enter the date in the yyyy-mm-dd format")
		return false
	}
	if (strMonth.length<1 || month<1 || month>12){
		alert("Please, enter a correct month")
		return false
	}
	if (strDay.length<1 || day<1 || day>31 || (month==2 && day>daysInFebruary(year)) || day > daysInMonth[month]){
		alert("Please, enter a correct day")
		return false
	}
	if (strYear.length != 4 || year==0){
		alert("Please, enter a correct year")
		return false
	}
	if (dtStr.indexOf(dtCh,pos2+1)!=-1 || isInteger(stripCharsInBag(dtStr, dtCh), false)==false){
		alert("Please, enter a correct date")
		return false
	}
	return true
}

function validateDate(field) {

	emptyOk = defaultEmptyOK;

	if (validateDate.arguments.length > 1) {
	    emptyOk = validateDate.arguments[1];
	}
	
	if (!emptyOk && !validateRequired(field)) {
		return false;
	}

	if (emptyOk && isEmpty(field.value)) {
		return true;
	}

	if (!isItDate(field.value)) {
		field.focus();
		return false;
	} else {
		return true;
	}
}

function isHexaDigit (c)
{   
	return (((c >= "0") && (c <= "9")) || ((c.toLowerCase() >= "a") && (c.toLowerCase() <= "f")))
}

// isHexa (STRING s [, BOOLEAN emptyOK])
function isHexa (s)
{   
	var i;

    if (isEmpty(s)) 
       if (isHexa.arguments.length == 1) return defaultEmptyOK;
       else return (isHexa.arguments[1] == true);

    for (i = 0; i < s.length; i++)
    {   
        var c = s.charAt(i);

        if (!isHexaDigit(c)) return false;
    }

    return true;
}

function validateHexa(field) {

	emptyOk = defaultEmptyOK;

	if (validateHexa.arguments.length > 1) {
	    emptyOk = validateHexa.arguments[1];
	}

	if (!emptyOk && !validateRequired(field)) {
		return false;
	}

	if (!isHexa(field.value, emptyOk)) {
		alert("Please, enter a hexadecimal number");
		field.focus();
		return false;
	} else {
		return true;
	}
}

/**
 * DHTML email validation script. 
 * Courtesy of SmartWebby.com (http://www.smartwebby.com/dhtml/)
 */

function validateEmail(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("Introduceti o adresa de mail valida! (Ex: email@server.com)")
		   return false
		}

		if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr){
		   alert("Introduceti o adresa de mail valida! (Ex: email@server.com)")
		   return false
		}

		if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr){
		   alert("Introduceti o adresa de mail valida! (Ex: email@server.com)")
		    return false
		}

		 if (str.indexOf(at,(lat+1))!=-1){
		   alert("Introduceti o adresa de mail valida! (Ex: email@server.com)")
		    return false
		 }

		 if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot){
		   alert("Introduceti o adresa de mail valida! (Ex: email@server.com)")
		    return false
		 }

		 if (str.indexOf(dot,(lat+2))==-1){
		   alert("Introduceti o adresa de mail valida! (Ex: email@server.com)")
		    return false
		 }
		
		 if (str.indexOf(" ")!=-1){
		   alert("Introduceti o adresa de mail valida! (Ex: email@server.com)")
		    return false
		 }

 		 return true					
}