// validate search form
function validateSearchForm() {
	if(!document.getElementById('cityId').value.length) {
		alert('Enter a destination');
		return false;
	}
	/*
	if(!document.getElementById('date_1').value.length) {
		alert('Select date of arrival');
		return false;		
	}
	if(!document.getElementById('date_2').value.length) {
		alert('Select date of departure');
		return false;		
	}
	*/
	if(document.getElementById('date_1').value.length && document.getElementById('date_2').value.length) {
		showLoader();
	}
	return true;
}

// validate availability form
function validateAvaForm() {
	if(!document.getElementById('hdate_1').value.length) {
		alert('Select date of arrival');
		return false;		
	}
	if(!document.getElementById('hdate_2').value.length) {
		alert('Select date of departure');
		return false;		
	}
	return true;
}

function validateSmSearchForm() {
	if(!document.getElementById('cityId').value.length) {
		alert('Enter a destination');
		return false;
	}
	/*
	if(!document.getElementById('smdate_1').value.length) {
		alert('Select date of arrival');
		return false;		
	}
	if(!document.getElementById('smdate_2').value.length) {
		alert('Select date of departure');
		return false;		
	}
	*/
	if(document.getElementById('smdate_1').value.length && document.getElementById('smdate_2').value.length) {
		showLoader();
	}
	return true;
}


// hotel detail, used to display availability, map, amenities blocks
function showLayer(id, bodyClass) {
	var elementNum = id.substring(3,4);
	// hide other layers
	for(var x = 1; x <=3; x++) {
		if(x != elementNum) {
			document.getElementById("tab"+x).style.display = "none";
		}
	}
	// display selected layer
	divO = document.getElementById(id);
	divO.style.display = '';
	// change body class
	bodyO = document.getElementById('body');
	bodyO.className = bodyClass;
	map.checkResize();
}

// check room is selected for booking
function validateRoomsForm(rooms) {
	for(var x = 0; x < rooms; x++) {
		var obj = document.getElementById("room_"+x);
		if(obj.value > 0) {
			return true;
		}
	}
	alert('Please select a room');
	return false;		
}