var xmlhttp;

function loadXMLDoc(url)
{
xmlhttp = 0;
try {
            xmlhttp = new ActiveXObject('Msxml2.XMLHTTP');
        }
        catch (err2) {
            try {
                xmlhttp = new ActiveXObject('Microsoft.XMLHTTP');
            }
            catch (err3) {
		try {
			xmlhttp = new XMLHttpRequest();
		}
		catch (err1) 
		{
			xmlhttp = false;
		}
            }
        }
xmlhttp.onreadystatechange=state_Change;
xmlhttp.open("GET",url,true);
xmlhttp.send(null);
}

function state_Change()
{
if (xmlhttp.readyState==4)
  {// 4 = "loaded"
    document.getElementById('time').innerHTML=xmlhttp.responseText;

    }
  }

function runajax() {
setInterval( "loadXMLDoc('alla/index.php?'+Math.random())", 1000 );
}