//Error message 
var StartCantBeNull = "Chyba, vstup ";
var EndCantBeNull = " nieje vyplnený a je povinný.";
var StartAlreadyExistingLogin = "Error, login ";
var EndAlreadyExistingLogin = "already exists";
var StartIntNumber = "Chyba, vstup ";
var EndIntNumber = " nieje číslo.";

function pausecomp(millis) 
{
var date = new Date();
var curDate = null;

do { curDate = new Date(); } 
while(curDate-date < millis);
}

function isNotNull(Data, FieldName)
{
	// isNotNull just cheks if the content of a field is not null
	// Data is a text value, content of the field
	// FieldName is the caption name of the data
	Data = trim(Data);
	if (Data.length==0)
	{               		
		alert(StartCantBeNull + FieldName + EndCantBeNull);
		return false;
	}
	else
		return true;
}

function trim(s) 
{
	while (s.substring(0,1) == ' ') 
	{
    		s = s.substring(1,s.length);
  	}
  	while (s.substring(s.length-1,s.length) == ' ') 
	{
    		s = s.substring(0,s.length-1);
  	}
  	return s;
}

function isIntNumber( typeNumber, textNotInt )
{
	// returns true if typeNumber is number 
	if ( !( parseInt(typeNumber) == typeNumber )) //its invalid number
	{
		alert(StartIntNumber + textNotInt + EndIntNumber);
		return false;
	}
	else
		return true;
}

function checkAllCheckboxes( form, prefix, count ) {
	for (var j = 0; j < count; j++) {
		box = eval(form + "." + prefix + "_" + j); 
		if (box.checked == false) box.checked = true;
   	}
}

function uncheckAllCheckboxes( form, prefix, count ) {
        for (var j = 0; j < count; j++) {
                box = eval(form + "." + prefix + "_" + j);
                if (box.checked == true) box.checked = false;
        }
}

function isValidEmail(str) 
{
   if ((str.indexOf(".") > 0) && (str.indexOf("@") > 0))
   {
   	return true;
   }
   else
   {
   	alert("Email nieje správneho tvaru.");
   	return false;
   } 
}

function numbersonly(myfield, e, dec)
{
	var key;
	var keychar;
	
	if (window.event)
	   key = window.event.keyCode;
	else if (e)
	   key = e.which;
	else
	   return true;
	keychar = String.fromCharCode(key);
	
	// control keys
	if ((key==null) || (key==0) || (key==8) || 
	    (key==9) || (key==13) || (key==27) )
	   return true;
	
	// numbers
	else if ((("0123456789").indexOf(keychar) > -1))
	   return true;
	
	// decimal point jump
	else if (dec && (keychar == "."))
	   {
	   myfield.form.elements[dec].focus();
	   return false;
	   }
	else
	   return false;
}

function floatnumbersonly(myfield, e, dec)
{
	var key;
	var keychar;

	if (window.event)
	   key = window.event.keyCode;
	else if (e)
	   key = e.which;
	else
	   return true;
	keychar = String.fromCharCode(key);
	
	// control keys
	if ((key==null) || (key==0) || (key==8) || 
	    (key==9) || (key==13) || (key==27) )
	   return true;
	
	// numbers
	else if ((("0123456789").indexOf(keychar) > -1))
	   return true;

	// decimal char overujeme ci tam nieje dvakrat
	else if (keychar == "." || keychar == ",")
	{
		if ( (myfield.value).indexOf(".",0)> -1 )
	   		return false;
	   	else {
			e.which = 46; //znak .
			window.event.keyCode = 46; //znak .
	   		return true;
	   	}
	}
	
	else
	   return false;
}

function numbersIntervalOnly(typeNumber, maxVal) 
{
	if (maxVal == "" || maxVal == null) return true;	
	if ( typeNumber > maxVal) 
	{
		alert("Zadávané číslo musí byť menšie ako "+maxVal+".");
		return false;
	}
	else
		return true;	
}

function CharsCheck(myfield, e, dec)
{
	var key;
	var keychar;
	
	if (window.event)
	   key = window.event.keyCode;
	else if (e)
	   key = e.which;
	else
	   return true;
	keychar = String.fromCharCode(key);
	
	// control keys
	if ((key==null) || (key==0) || (key==8) || 
	    (key==9) || (key==13) || (key==27) )
	   return true;
	
	// numbers
	else if (!(("'\"`%+=").indexOf(keychar) > -1))
	   return true;
	
	// decimal point jump
	else if (dec && (keychar == "."))
	   {
	   myfield.form.elements[dec].focus();
	   return false;
	   }
	else
	   return false;
}



// Declaring valid date character, minimum year and maximum year
var dtCh= "/";
var minYear=1;
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(dtStrdd,dtStrmm, dtStryyyy){
	var dtStr=dtStrmm+dtCh+dtStrdd+dtCh+dtStryyyy;
	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 (dtStrdd=='' || dtStrmm=='' || dtStryyyy=='') return true;
	
	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 (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"+dtStr);
		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"+dtStr);
		return false;
	}
	return true;
}

// funkcia pre vyber kraju na uvodnej stranke
var LastMapRegionVisible = "statemapregionDUMMY";
function switchokres(NewRegionVisible)
{
	document.getElementById("statemapregionBANNER").style.zIndex = 0;
	document.getElementById("statemapregionBANNER").style.visibility = 'hidden';
	document.getElementById(LastMapRegionVisible).style.zIndex = 0;
	document.getElementById(LastMapRegionVisible).style.visibility = 'hidden';
	document.getElementById(NewRegionVisible).style.zIndex = 999;
	document.getElementById(NewRegionVisible).style.visibility = 'visible';
	LastMapRegionVisible = NewRegionVisible;
	return true;
}