function chkKereso() {
	var err = '';
	
	if(document.getElementById('keres').value == '') {
		err = 'err';}
		
	if(err != '') {
		alert('Please, enter a word or expression!'); //20.
		return false;
	} else {
		document.kereses.submit()
		return true;
	}	
}

function chkHirlevel() {
	var err = '';

	if(document.getElementById('email').value == '') {
		err = 'Please, enter Your e-mail address.';} //22.
		
	if(document.getElementById('email').value != '') {
		err = echeck(document.getElementById('email').value);}	
		
	if(err != '') {
		alert(err);
		return false;
	} else {
		document.hirlevel.submit()
		return true;
	}	
}

function echeck(str) {

		var at="@"
		var dot="."
		var lat=str.indexOf(at)
		var lstr=str.length
		var ldot=str.indexOf(dot)
		var mess ='';
		
		if (str.indexOf(at)==-1){
		   return mess = 'Please, enter Your e-mail address correctly.'; //46
		}

		if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr){
		   return mess = 'Please, enter Your e-mail address correctly.';
		}

		if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr){
		   return mess = 'Please, enter Your e-mail address correctly.';
		}

		 if (str.indexOf(at,(lat+1))!=-1){
		   return mess = 'Please, enter Your e-mail address correctly.';
		 }

		 if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot){
		   return mess = 'Please, enter Your e-mail address correctly.';
		 }

		 if (str.indexOf(dot,(lat+2))==-1){
		   return mess = 'Please, enter Your e-mail address correctly.';
		 }
		
		 if (str.indexOf(" ")!=-1){
		   return mess = 'Please, enter Your e-mail address correctly.';
		 }
		 
 		 return mess;					
}

function chkSzallasKereso() {
	var err = '';
	
	if(document.getElementById('dhtml_TelepulesLista').selectedIndex == '0') {
		err = 'Please, select a settlement.\n'; //26
	} else {
/*
	if(document.getElementById('dhtml_SzallasTipus').selectedIndex == '0') {
		err = 'Kérem válasszon típust!\n';
	}
*/
		if(document.getElementById('dhtml_Szallas').selectedIndex == '0') {
			err = 'Please, select an accommodation unit.\n'; //28
		}
	}

	if(err != '') {
		alert(err);
		return false;
	} else {
		document.szallaskereso.submit();
		return true;
	}	

}

function chkVendeglatoKereso() {
	var err = '';
	
	if(document.getElementById('dhtml_TelepulesLista').selectedIndex == '0') {
		err = 'Please, select a settlement.\n';//26
	} else {

		if(document.getElementById('dhtml_Vendeglato').selectedIndex == '0') {
			err = 'Please, select a catering unit.\n'; //29
		}
	}

	if(err != '') {
		alert(err);
		return false;
	} else {
		document.vendeglatokereso.submit();
		return true;
	}	

}

function chkRendezvenyKereso() {
    var err = '';	
    var myCity = document.getElementById('telepuleslista').selectedIndex;
    var myDayStr = document.getElementById('nap').options[document.getElementById('nap').selectedIndex].value;
	var myMonthStr = document.getElementById('honap').options[document.getElementById('honap').selectedIndex].value;
	var myYearStr = document.getElementById('ev').options[document.getElementById('ev').selectedIndex].value;
	
	if(myCity == 0 && (myDayStr == '' || myMonthStr == '' || myYearStr == '')) {
			 err = 'Please select a settlement and date!';
	}
	
	if(myDayStr != '' || myMonthStr!= '' || myYearStr != '') {
	
		if (!isDate(myDayStr + '/' + myMonthStr + '/' + myYearStr)) {
		  err = 'Nem létező dátum!';
		}
		
	}
	
	if(err != '') {
		alert(err);
		return false;
	} else {
		 document.rendezvenykereso.submit();	
		return true;
	}
  
}