/* The following function creates an XMLHttpRequest object... */

function createRequestObject(){
	var request_o;
	var browser = navigator.appName;
	if(browser == "Microsoft Internet Explorer"){
		request_o = new ActiveXObject("Microsoft.XMLHTTP");
	}else{
		request_o = new XMLHttpRequest();
	}
	return request_o;
}

var http = createRequestObject(); 

function getInfo(info_id, office_t){
	http.open('get', 'infobg.aspx?info_ID=' + info_id + '&office_t=' + office_t)
	http.onreadystatechange = handleProducts;
	http.send(null);
	central_Sofia('zone_expl', info_id);
}

function handleProducts(){
	if(http.readyState == 4){
		var response = http.responseText;
		change_text('test_text', response);
	}
}

function change_text(object, text){
if (document.layers && document.layers[object])
    {
    document.layers[object].innerHTML = text;
    }
  else if (document.all)
    {
    document.all[object].innerHTML = text;
    }
  else if (document.getElementById)
    {
    document.getElementById(object).innerHTML = text;
    }
}

function central_Sofia(object, info_id){
 if (info_id !== 17 && info_id !== 30) {
  if (document.layers && document.layers[object])
    {
    document.layers[object].visibility = 'hidden';
    }
  else if (document.all)
    {
    document.all[object].style.visibility = 'hidden';
    }
  else if (document.getElementById)
    {
    document.getElementById(object).style.visibility = 'hidden';
    }
 }else{
  if (document.layers && document.layers[object])
    {
    document.layers[object].visibility = 'visible';
    }
  else if (document.all)
    {
    document.all[object].style.visibility = 'visible';
    document.all[object].style.zIndex = 100;
    }
  else if (document.getElementById)
    {
    document.getElementById(object).style.visibility = 'visible';
    document.getElementById(object).style.zIndex = 100;
    }
 }
}