1function httpGet(theUrl) {
2    var xmlHttp = new XMLHttpRequest();
3    xmlHttp.open( "GET", theUrl, false ); // false for synchronous request
4    xmlHttp.send( null );
5    return xmlHttp.responseText;
6}

1function httpGet(theUrl)
2{
3    var xmlHttp = new XMLHttpRequest();
4    xmlHttp.open( "GET", theUrl, false ); // false for synchronous request
5    xmlHttp.send( null );
6    return xmlHttp.responseText;
7}
8

1function httpGetAsync(url, callback) {
2  var xmlHttp = new XMLHttpRequest();
3  xmlHttp.onreadystatechange = function() { 
4    if (xmlHttp.readyState == 4 && xmlHttp.status == 200)
5      callback(xmlHttp.responseText);
6  }
7  xmlHttp.open("GET", url, true); // true for asynchronous 
8  xmlHttp.send(null);
9}