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; 
	}
}