function showoffers (from) {
	if (from=="gla") {
	document.getElementById("pik").style.display="none";
	document.getElementById("gla").style.display="block";
}
	else {
	document.getElementById("gla").style.display="none";
	document.getElementById("pik").style.display="block";
}
}

function closead() {
		document.getElementById("toplayer").style.display="none";
}
function showagefields() {
		document.getElementById("age1").style.display="none";
		document.getElementById("age2").style.display="none";
		document.getElementById("age3").style.display="none";		
		document.getElementById("age4").style.display="none";		
		document.getElementById("age5").style.display="none";		
		document.getElementById("age6").style.display="none";
	amount=document.enquiry_form.e_children.options[document.enquiry_form.e_children.options.selectedIndex].value;
	if (amount==0) {
		document.getElementById("age1").style.display="none";
		document.getElementById("age2").style.display="none";
		document.getElementById("age3").style.display="none";		
		document.getElementById("age4").style.display="none";		
		document.getElementById("age5").style.display="none";		
		document.getElementById("age6").style.display="none";
	}	
	if (amount==1) {
		document.getElementById("age1").style.display="block";
	}
	if (amount==2) {
		document.getElementById("age1").style.display="block";
		document.getElementById("age2").style.display="block";		
	}
	if (amount==3) {
		document.getElementById("age1").style.display="block";
		document.getElementById("age2").style.display="block";		
		document.getElementById("age3").style.display="block";
	}
	if (amount==4) {
		document.getElementById("age1").style.display="block";
		document.getElementById("age2").style.display="block";		
		document.getElementById("age3").style.display="block";
		document.getElementById("age4").style.display="block";
	}
	if (amount==5) {
		document.getElementById("age1").style.display="block";
		document.getElementById("age2").style.display="block";		
		document.getElementById("age3").style.display="block";
		document.getElementById("age4").style.display="block";	
		document.getElementById("age5").style.display="block";
	}
	if (amount==6) {
		document.getElementById("age1").style.display="block";
		document.getElementById("age2").style.display="block";		
		document.getElementById("age3").style.display="block";
		document.getElementById("age4").style.display="block";	
		document.getElementById("age5").style.display="block";		
		document.getElementById("age6").style.display="block";
	}					
}


function check_enquiry_form() {

	if (document.enquiry_form.e_firstname.value=="" || 
		document.enquiry_form.e_surname.value=="" ||	
		document.enquiry_form.e_email.value=="" ||	
		document.enquiry_form.e_phone.value=="" ||	
		document.enquiry_form.e_mobile.value=="") {
		alert ('All fields marked with * are required!');
		return false;
	}
	else {
		return true; 
	}
}

function check_senquiry_form() {

	if (document.senquiry_form.e_firstname.value=="" || 
		document.senquiry_form.e_surname.value=="" ||	
		document.senquiry_form.e_email.value=="" ||	
		document.senquiry_form.e_phone.value=="" ||
		document.senquiry_form.e_departure_date_day.options[document.senquiry_form.e_departure_date_day.options.selectedIndex].value=="" ||		
		document.senquiry_form.e_departure_date_month.options[document.senquiry_form.e_departure_date_month.options.selectedIndex].value=="" ||		
		document.senquiry_form.e_departure_date_year.options[document.senquiry_form.e_departure_date_year.options.selectedIndex].value=="" ||	
		document.senquiry_form.e_duration.options[document.senquiry_form.e_duration.options.selectedIndex].value=="" ||			
		document.senquiry_form.e_mobile.value=="") {
		alert ('All fields marked with * are required!');
		return false;
	}
	else {
		return true; 
	}
}
function check_ages() {
	var err=0;
		if (document.getElementById("age1").style.display=="block" && document.enquiry_form.age1.options[document.enquiry_form.age1.options.selectedIndex].value==0) err++;
		if (document.getElementById("age2").style.display=="block" && document.enquiry_form.age2.options[document.enquiry_form.age2.options.selectedIndex].value==0) err++;
		if (document.getElementById("age3").style.display=="block" && document.enquiry_form.age3.options[document.enquiry_form.age3.options.selectedIndex].value==0) err++;
		if (document.getElementById("age4").style.display=="block" && document.enquiry_form.age4.options[document.enquiry_form.age4.options.selectedIndex].value==0) err++;
		if (document.getElementById("age5").style.display=="block" && document.enquiry_form.age5.options[document.enquiry_form.age5.options.selectedIndex].value==0) err++;
		if (document.getElementById("age6").style.display=="block" && document.enquiry_form.age6.options[document.enquiry_form.age6.options.selectedIndex].value==0) err++;
	if (err>0) {
		alert ('Please specify children ages!');
		return false;
}
	else return true;
}


function enablebutton(id) {
	if (document.getElementById(id).disabled==true) document.getElementById(id).disabled=false;
}
 function showpicture(url,width, height)
{
        LeftPosition=(screen.width)?(screen.width-width)/2:100;
     TopPosition=(screen.height)?(screen.height-height)/2:100;
        var Win = window.open(url,'showpic','width=' + width + ',height=' + height + ',top='+TopPosition+',left=' +LeftPosition +',resizable=0,scrollbars=no,menubar=no,toolbar=no,status=no')
}
function newImage(arg) {
  if (document.images) {
    rslt = new Image();
    rslt.src = arg;
    return rslt;
  }
}

function changeImages() {
    preloadFlag = true;
  if (document.images && (preloadFlag == true)) {
    for (var i=0; i<changeImages.arguments.length; i+=2) {
      document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
    }
  }
}


function newImage(arg) {
  if (document.images) {
    rslt = new Image();
    rslt.src = arg;
    return rslt;
  }
}
var preloadFlag = false;




function preloadImages() {
  if (document.images) {
    home_on = newImage("images/home_.gif");
    location_on = newImage("images/location_.gif");
    accommodation_on = newImage("images/accommodation_.gif");
    availability_on = newImage("images/availability_.gif");
    prices_on = newImage("images/prices_.gif");
    enquiry_on = newImage("images/enquiry_.gif");    
    preloadFlag = true;
  }
}

function check_enquiry_form() {
	var nameerr="";
	var surnameerr="";
	var emailerr="";
	var phoneerr="";

	if (document.enquiry_form.e_firstname.value=="" ) nameerr="Please complete name field.\n";
	if (document.enquiry_form.e_email.value=="") emailerr="Please complete email field.\n";
	if (document.enquiry_form.e_phone.value=="") phoneerr="Please complete phone field.\n";
	if (document.enquiry_form.e_surname.value=="") surnameerr="Please complete surname field.\n";
		if (nameerr!="" || emailerr!="" || phoneerr!="" || surnameerr!="") {
		alert ('All fields marked with * are required!\n'+nameerr+surnameerr+emailerr+phoneerr);
		return false;
	}
	else {
		return true; 
	}
}