var dtCh= "/";
var minYear=1900;
var maxYear=2100;

function submitCityPageValidation(objDate,objHotelName){
	if (!submitDateValidation(objDate)){
		return false;
	}
	if (!submitHotelValidation(objHotelName)){
		return false;
	}
return true;
}

function submitCityGroupPageValidation(objDate,objHotelName,objCityName){
	
	if (!submitCityPageValidation(objDate,objHotelName)){
		return false;
	}
	if (!submitCityNameValidation(objCityName)){
		return false;
	}
return true;
}

function submitNewSearchValidation(objDate,objHotelName,objCityName,objHotelNameInitial,objCityNameInitial){

	checkInitialValues(objHotelName,objCityName,objHotelNameInitial,objCityNameInitial);

	if (!submitCityGroupPageValidation(objDate,objHotelName,objCityName)){
		return false;
	}
return true;
}

function checkInitialValues(objHotelName,objCityName,objHotelNameInitial,objCityNameInitial){
	if (objHotelNameInitial.value != objHotelName.value){
		document.frm.hotelCode.value = '';
	}
	if (objCityNameInitial.value != objCityName.value){
		document.frm.cityCode.value = '';
	}
}


function submitDateValidation(objDate){
	if (isDate(objDate.value)==false){
		objDate.focus();
		return false;
	}
return true;
}

function submitCityNameValidation(objCityName)
{
	if (objCityName.value.length >= 0 && objCityName.value.length < 3 )
	{
		alert( 'Please enter a city name with at least three characters to perform the search.' );
		objCityName.focus();
		return false;
	}
return true;
}

function submitHotelValidation(objHotelName)
{
	if (objHotelName.value.length > 0 &&
		objHotelName.value.length < 3 )
	{
		alert( 'Please enter a property name with at least three characters to perform the search.' );
		objHotelName.focus();
		return false;
	}
return true;
}

function closeChildWindow(name) 
{
    var hotelSearchWin = window.open('', name);
    hotelSearchWin.close();
}

function setHotel(hotelCode, hotelName) {
	document.frm.hotelCode.value = hotelCode;
	document.frm.hotelName.value = hotelName;
	return true;
}


function breakoutFrame(url)
{
	if (window.top != window.self) 
	{
		window.top.location=url
	}
}

function changeCity(city)
{
	document.frm.hotelCode.value='';
	document.frm.hotelName.value='';
	
	if (city.value.length==4)
	{
		document.frm.cityCode.value=city.value;
	}
}

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 = "";
    for (i = 0; i < s.length; i++){   
        var c = s.charAt(i);
        if (bag.indexOf(c) == -1) returnString += c;
    }
    return returnString;
}

function daysInFebruary (year){
    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(dtStr){
	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){
		alert("The date format should be : dd/mm/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")
		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")
		return false
	}
	
	var now = new Date();
	var today = new Date(now.getYear(),now.getMonth(),now.getDate());
	var testdate = new Date(strYear,strMonth-1,strDay);
    if (testdate < today){
     	alert("Date must not be in the past")
        return false;
    }
return true
}

function setChildrenDropdowns(objRoomType)
{
	var value = objRoomType.options[objRoomType.selectedIndex].value;
	var c1St = document.frm.childAge1.style;
	var c2St = document.frm.childAge2.style;
	var c3St = document.frm.childAge3.style;
	var chAgeSt = document.getElementById("childagestext").style;
	if (value == "SINGLE_CHILD" ||
		value == "TWIN_CHILD" ||
		value == "DOUBLE_CHILD" ||
		value == "FAMILY_CHILD")
	    
	{
		c1St.visibility='visible';
		c2St.visibility='hidden';
		c3St.visibility='hidden';
		chAgeSt.visibility="visible";
		
	} else if (value == "FAMILY_2_CHILDREN")
	{
		c1St.visibility='visible';
		c2St.visibility='visible';
		c3St.visibility='hidden';
		chAgeSt.visibility="visible";
		
	} else if (value == "FAMILY_3_CHILDREN")
	{
		c1St.visibility='visible';
		c2St.visibility='visible';
		c3St.visibility='visible';
		chAgeSt.visibility="visible";
	} else
	{
		c1St.visibility='hidden';
		c2St.visibility='hidden';
		c3St.visibility='hidden';
		chAgeSt.visibility="hidden";
	}
}

function blockdisplay(i) 
{
	if (document.getElementById)
	{
		if (document.getElementById("blockdisplay"+i)) 
		{
			for ( j = 1; j < 1000; j++ ) 
			{
				if (document.getElementById('blockdisplay' + j)) 
				{
					document.getElementById('blockdisplay' + j).style.display = 'none';
				} else 
				{
					j = 1000;
				}
			}
			if (i) 
			{
				document.getElementById("blockdisplay"+i).style.display = 'block';
			}
			
			if (i != 5) 
			{
				scrollDown();
			}
			
		}
	}
}


function scrollDown()
{
	if (screen.height<600)	
		scroll(0, 600);
		
	if (screen.height>=600 &&
	    screen.height<768)
		scroll(0, 550);

	if (screen.height>=768 &&
	    screen.height<864)
		scroll(0, 400);

	if (screen.height>=864 &&
	    screen.height<960)
		scroll(0, 300);	
		
	if (screen.height>=960)
		scroll(0, 250);
}

function syncCheckBox(objFromCB, toCBName)
{
	var objToCB = document.getElementById(toCBName);

	if (objFromCB.checked)
	{
		objToCB.checked='checked';
	} else
	{
		objToCB.checked='';
	}
}

function setDropDown(objCB, nameDropDown)
{
	var objDropDown = document.getElementById(nameDropDown);

	if (objCB.checked)
	{
		objDropDown.disabled=false;
	} else
	{
		objDropDown.disabled=true;
	}
}

function destinationChanged()
{
	document.frm.cityCode.value='';
	
	clearAreas();
}

function clearAreas()
{
	var collection = document.getElementsByName('AREA[]');

	for(var i=0; i<collection.length; i++)
	{
		collection[i].checked = '';
	}
}


function submitSearchForCityAreas()
{
 	if (!submitCityNameValidation(document.frm.cityName)){
 		return false;
 	}
 	
 	document.frm.searchForCityAreas.value = 'on';
 	clearAreas();
 	document.frm.submit() ;
}


function submitNewSearchForCityAreas()
{
 	if (!submitCityNameValidation(document.frm.cityName)){
 		return false;
 	}
 	
 	document.frm.searchForCityAreas.value = 'on';
 	clearAreas();
 	checkInitialValues(document.frm.hotelName, document.frm.cityName, document.frm.hotelNameInitial, document.frm.cityNameInitial);
 	document.frm.submit() ;
}