function ajax_call(url, paramiters, element_id){
	var http = false;
	
	if(navigator.appName == "Microsoft Internet Explorer") {
  		http = new ActiveXObject("Microsoft.XMLHTTP");
	} else {
 	 	http = new XMLHttpRequest();
	} 
	
 	 http.open("GET", url+paramiters, true);
 	 http.onreadystatechange=function() {
  	  if(http.readyState == 4) {
   	 	document.getElementById(element_id).innerHTML = http.responseText; 
   	 }
  	}
	
  	http.send(null);
}

function ajax_call_visible(url, paramiters, element_id){
	var http = false;
	if(navigator.appName == "Microsoft Internet Explorer") {
  		http = new ActiveXObject("Microsoft.XMLHTTP");
	} else {
 	 	http = new XMLHttpRequest();
	} 
	
 	 http.open("GET", url+paramiters, true);
 	 http.onreadystatechange=function() {
  	  if(http.readyState == 4) {
  	  	  var responce = http.responseText;
  	  		if(responce == "no"){
   	 			document.getElementById(element_id).style.display = "block";
   	 			document.getElementById("one_way").value = "2";
   	 		}else if(responce == "yes"){
   	 			document.getElementById(element_id).style.display = "none";
   	 			document.getElementById("one_way").value = "1";
   	 		}else{
   	 			document.getElementById(element_id).style.display = "none";
   	 			document.getElementById("one_way").value = "0";
   	 		}
   	 	
   	 	}
  	}
	
  	http.send(null);
}