function menuRequest(url)  //This is a first function. Menu request.
{
		var arg = url;
		url = "./phppages/content.php?q=" + url;
		var http_request = false;

if (window.XMLHttpRequest) 
{ // Mozilla, Safari,...
http_request = new XMLHttpRequest();

if (http_request.overrideMimeType) 
{
http_request.overrideMimeType('text/xml');
// See note below about this line
}
} 

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('Giving up :( Cannot create an XMLHTTP instance');
return false;
}

http_request.onreadystatechange = function() { alertContents(http_request); };
http_request.open('GET', url, true);
http_request.send(null);
}






//second function. Alert contents.

function alertContents(http_request) 
{
if (http_request.readyState == 4) 
{
if (http_request.status == 200) 
{
document.getElementById("content").innerHTML=http_request.responseText;
}
else 
{
alert('There was a problem with the request.');
}
}
}