var http = false;

if (navigator.appName == "Microsoft Internet Explorer") {
	http = new ActiveXObject("Microsoft.XMLHTTP");
} else {
	http = new XMLHttpRequest();
}




function loadcontent(container_id, url) {  

  http.open("GET", url, true);
  http.onreadystatechange=function() {
    if(http.readyState == 4) {
      document.getElementById(container_id).innerHTML = http.responseText;
    }
  }
  http.send(null);

}