var xmlhttp
	
function request_optionbox_countries(value) {
	xmlhttp = GetXmlHttpObject();
	if(xmlhttp==null) {
  		alert("Your browser does not support AJAX!");
  		return;
  	}
	
	var url = "./assets/snippets/add/actions/get_countries.php";
	url = url+"?value="+value;
	xmlhttp.onreadystatechange=stateChanged_countries;
	xmlhttp.open("GET",url,true);
	xmlhttp.send(null);
}

function request_optionbox_region(value) {
	xmlhttp = GetXmlHttpObject();
	if(xmlhttp==null) {
  		alert("Your browser does not support AJAX!");
  		return;
  	}
	
	var url = "./assets/snippets/add/actions/get_region.php";
	url = url+"?value="+value;
	xmlhttp.onreadystatechange=stateChanged_region;
	xmlhttp.open("GET",url,true);
	xmlhttp.send(null);
}

function request_optionbox_offices(value) {

	var input_container = document.getElementById('inputbox_container');
	// alert(input_container);
	if(value == ''){
		input_container.style.display = 'none';
	}else{
		input_container.style.display = 'block';
	}
}

function request_optionbox_subject(value) {
	xmlhttp = GetXmlHttpObject();
	if(xmlhttp==null) {
  		alert("Your browser does not support AJAX!");
  		return;
  	}
	
	var url = "./assets/snippets/add/actions/get_subject.php";
	url = url+"?value="+value;
	xmlhttp.onreadystatechange=stateChanged_subject;
	xmlhttp.open("GET",url,true);
	xmlhttp.send(null);
}

function stateChanged_countries() {
	if(xmlhttp.readyState==4) {
  		var regions = document.getElementById("country");
  		regions.innerHTML = xmlhttp.responseText;
  	}
}

function stateChange_region() {
	if(xmlhttp.readyState==4) {
		var offices = document.getElementById("region");
  		offices.innerHTML = xmlhttp.responseText;
	}
}

function stateChange_office() {
	if(xmlhttp.readyState==4) {
		var subjects = document.getElementById("office");
  		subjects.innerHTML = xmlhttp.responseText;
	}
}

function stateChange_subject() {
	if(xmlhttp.readyState==4) {
		var subjects = document.getElementById("subject");
  		subjects.innerHTML = xmlhttp.responseText;
	}
}

function GetXmlHttpObject() {
	if(window.XMLHttpRequest) {
  		// code for IE7+, Firefox, Chrome, Opera, Safari
  		return new XMLHttpRequest();
  	}
	
	if(window.ActiveXObject) {
  		// code for IE6, IE5
  		return new ActiveXObject("Microsoft.XMLHTTP");
  	}
	
	return null;
}