function getHTTPObject() { 
	if (typeof XMLHttpRequest != 'undefined') { 
		return new XMLHttpRequest(); 
	} 
	try { 
		return new ActiveXObject("Msxml2.XMLHTTP"); 
	} catch (e) { 
		try { 
			return new ActiveXObject("Microsoft.XMLHTTP"); 
		}  catch (e) {}
	} 
	return false; 
}

function loadPage(htmlFile, location) {
	var http = getHTTPObject(); 
	http.open("GET", htmlFile, true); 
	http.onreadystatechange = function() { 
		if (http.readyState == 4) { 
			document.getElementById(location).innerHTML=http.responseText; 
			document.getElementById(location).style.visibility="visible";
			//clearTimeout(timer2);
			shiftOpacityIn(location, 1000, 0, 100);
		} 
	}
	http.send(null);
}

function postPage(url, parameters, location) {
	var http = getHTTPObject(); 
	http.open('POST', url, true);
	http.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
    http.setRequestHeader("Content-length", parameters.length);
    http.setRequestHeader("Connection", "close");
    http.send(parameters);
	http.onreadystatechange = function() { 
		if (http.readyState == 4) { 
			document.getElementById(location).innerHTML=http.responseText; 
		} 
	}
	http.send(null);
}

function post() {
	var commentID = document.getElementById("commentID").value;
	var poststr = "month=" + encodeURI( document.getElementById("month").value ) + "&commentID=" + encodeURI( document.getElementById("commentID").value ) + "&comment=" + encodeURI( document.getElementById("comment").value ) + "&user=" + encodeURI( document.getElementById("user").value )  + "&captcha=" + encodeURI( document.getElementById("captcha").value );
	//makePOSTRequest('comment.php', poststr, commentID);
	makePOSTRequest('comment2.php', poststr);
}



function makePOSTRequest(url, parameters) {
      http_request = false;
      if (window.XMLHttpRequest) { // Mozilla, Safari,...
         http_request = new XMLHttpRequest();
         if (http_request.overrideMimeType) {
         	// set type accordingly to anticipated content type
            //http_request.overrideMimeType('text/xml');
            http_request.overrideMimeType('text/html');
         }
      } else if (window.ActiveXObject) { // IE
         try {
            http_request = new ActiveXObject("Msxml2.XMLHTTP");
         } catch (e) {
            try {
               http_request = new ActiveXObject("Microsoft.XMLHTTP");
            } catch (e) {}
         }
      }
      if (!http_request) {
         alert('Cannot create XMLHTTP instance');
         return false;
      }
      
      http_request.onreadystatechange = alertContents;
      http_request.open('POST', url, true);
      http_request.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
      http_request.setRequestHeader("Content-length", parameters.length);
      http_request.setRequestHeader("Connection", "close");
      http_request.send(parameters);
   }

   function alertContents() {
      if (http_request.readyState == 4) {
         if (http_request.status == 200) {
            //alert(http_request.responseText);
            result = http_request.responseText;
            document.getElementById('right_text').innerHTML = result;            
         } else {
            alert('There was a problem with the request.');
         }
      }
   }
   
   function showMenu(){
   		document.getElementById('submenu').style.visibility="visible";
   }
   
   function hideMenu(){
   		document.getElementById('submenu').style.visibility="hidden";
   }