function formValidacija(){

	var greska = "";
	var digits = "0123456789";
	var txt = "abcccddefghijklmnoprsštuvzžxyqABCCCDÐEFGHIJKLMNOPRSŠTUVZŽXYQ" 
	
	if (document.forms[0].hotel.value == "0") { 
		greska = greska + "Please choose your Hotel ! \n"; 
	}
	
	if (document.forms[0].startDate.value.length == "") { 
		greska = greska + "Please enter Start date ! \n"; 
		}
	else {
  		greska = validateDatum(document.forms[0].startDate.value,greska)
  	}
	
	if (document.forms[0].nights.value.length == "") { 
		greska = greska + "Please enter Length of stay ! \n"; 
		}
	else {
		for (var i = 0; i < document.forms[0].nights.value.length; i++){
	    	temp = document.forms[0].nights.value.substring(i, i+1)
			if (digits.indexOf(temp) == -1 && document.forms[0].nights.value != "")  {
	      		greska = greska + "Length of stay contains illegal characters !\n"; 
	      		break;
	    		}
	  		}
	  	}
		
	if (document.forms[0].roomType.value == "0") { 
		greska = greska + "Please choose your Room type ! \n"; 
	}
	
	if (document.forms[0].nubmerRoom.value.length == "") { 
		greska = greska + "Please enter Number of Rooms ! \n"; 
		}
	else {
		for (var i = 0; i < document.forms[0].nubmerRoom.value.length; i++){
	    	temp = document.forms[0].nubmerRoom.value.substring(i, i+1)
			if (digits.indexOf(temp) == -1 && document.forms[0].nubmerRoom.value != "")  {
	      		greska = greska + "Number of Rooms contains illegal characters !\n"; 
	      		break;
	    		}
	  		}
	  	}

	if (document.forms[0].nubmerPerson.value.length == "") { 
		greska = greska + "Please enter Number of Persons ! \n"; 
		}
	else {
		for (var i = 0; i < document.forms[0].nubmerPerson.value.length; i++){
	    	temp = document.forms[0].nubmerPerson.value.substring(i, i+1)
			if (digits.indexOf(temp) == -1 && document.forms[0].nubmerPerson.value != "")  {
	      		greska = greska + "Number of Persons contains illegal characters !\n"; 
	      		break;
	    		}
	  		}
	  	}
		
	if (document.forms[0].surname.value.length == "") { 
		greska = greska + "Please enter your Surname ! \n"; 
		}
		
	if (document.forms[0].firstName.value.length == "") { 
		greska = greska + "Please enter your First Name ! \n"; 
		}
		
	if (document.forms[0].adress.value.length == "") { 
		greska = greska + "Please enter your Adress ! \n"; 
		}
		
	if (document.forms[0].postCode.value.length == "") { 
		greska = greska + "Please enter your Post Code ! \n"; 
		}
		
	if (document.forms[0].town.value.length == "") { 
		greska = greska + "Please enter your Town ! \n"; 
		}
		
	if (document.forms[0].country.value.length == "") { 
		greska = greska + "Please enter your Country ! \n"; 
		}
		
	if (document.forms[0].telephone.value.length == "") { 
		greska = greska + "Please enter your Telephone ! \n"; 
		}
		
	if (document.forms[0].fax.value.length == "") { 
		greska = greska + "Please enter your Fax ! \n"; 
		}
		
	if (document.forms[0].email.value.length == "") { 
		greska = greska + "Please enter your E-mail ! \n"; 
		}
	
	if (document.forms[0].confirmation.value == "0") { 
		greska = greska + "Please choose your Confirmation recive ! \n"; 
	}

	if (greska.length > 0) { 
		alert(greska); 
		return false; 
		}
	else {
		document.forms[0].submit()
	}
}


var dtCh= ".";
var minYear=1900;
var maxYear=2100;
var greska = "";

function isInteger(s){
	var i;
    	for (i = 0; i < s.length; i++){   
        	var c = s.charAt(i);
        	if (((c < "0") || (c > "9"))) 
			return false;
    		}
    	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 validateDatum(dtStr,greska){
	var daysInMonth = DaysArray(12)
	var pos1=dtStr.indexOf(dtCh)
	var pos2=dtStr.indexOf(dtCh,pos1+1)
	var strDay=dtStr.substring(0,pos1)
	var strMonth=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){
		greska = greska + "The date format should be: dd.mm.yyyy !\n"; 
		return greska
		}
	if (strMonth.length<1 || month<1 || month>12){
		greska = greska + "Start date is invalid !\n"; 
		return greska
		}
	if (strDay.length<1 || day<1 || day>31 || (month==2 && day>daysInFebruary(year)) || day > daysInMonth[month]){
		greska = greska + "Start date is invalid !\n"; 
		return greska
		}
	if (strYear.length != 4 || year==0 || year<minYear || year>maxYear){
		greska = greska + "Start date is invalid !\n"; 
		return greska
		}
	if (dtStr.indexOf(dtCh,pos2+1)!=-1 || isInteger(stripCharsInBag(dtStr, dtCh))==false){
		greska = greska + "Start date is invalid !\n"; 
		return greska
		}
	else{
		greska = ""
		return greska
		}
	}