function getHTTPObject()
{
	// code for Mozilla, etc.
	if (window.XMLHttpRequest)
  	{
  		xmlhttp=new XMLHttpRequest()
  	}
// code for IE
	else if (window.ActiveXObject)
  	{
  		xmlhttp=new ActiveXObject("Microsoft.XMLHTTP")
  	}
	return xmlhttp;
}
var http = getHTTPObject();
function get_specialization_ajax(val)
{
	document.getElementById("specialization_combo").style.display='none';
	document.getElementById("loading_specialization").style.display='';
	var selected_specialization = document.getElementById("selected_specialization").value;
	province_id = val;
	var url = SITE_URL+"get_specialization_ajax.php";
	url = url + "?province_id="+province_id+"&selected_specialization="+selected_specialization;
	http.open("GET", url, true);
	http.onreadystatechange = get_specialization_combo;
    http.send(null);
}

function get_specialization_combo()
{
	if (http.readyState == 4)
	{
   		var responce_text = http.responseText; 
		document.getElementById("loading_specialization").style.display='none';
		document.getElementById("specialization_combo").style.display='';
		document.getElementById("specialization_combo").innerHTML = responce_text;
	}
}