function doAlert(url, field)
{ 
alert (url);
}

function doAjaxGet(url, field)
{ 
var xmlHttp
try
 {
 // Firefox, Opera 8.0+, Safari
 xmlHttp=new XMLHttpRequest();
 }
catch (e)
 {
 // Internet Explorer
 try
  {
  xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
  }
 catch (e)
  {
  xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
  }
 }
 
if (xmlHttp==null)
 {
 alert ("Browser does not support HTTP Request")
 return
 } 
 
 
 if (url.indexOf("?") == -1) {
 url=url+"?"
 } else {
 url=url+"&"
 }

url=url+"sid="+Math.random()
xmlHttp.onreadystatechange=function () 
{ 
 if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete")
 { 
 document.getElementById(field).innerHTML=xmlHttp.responseText 
 } 
} 
xmlHttp.open("GET",url,true)
xmlHttp.send(null)
}