function showUser(city)
{ 
xmlHttp=GetXmlHttpObject()
document.getElementById("all").innerHTML="<table border=0 width=100 align=center height=50><tr><td><b>Please Wait....</b></td></tr></table>";
var url="cityguide.php?city=" + city + "&mid=" + Math.random();
//alert(url);
if (xmlHttp==null)
 {
 alert ("Browser does not support HTTP Request")
 return
 }
 
xmlHttp.onreadystatechange=stateChanged 
xmlHttp.open("GET",url,true)
xmlHttp.send(null)
}

function stateChanged() 
{ 
//alert(name)
if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete")
 { 
 document.getElementById("all").innerHTML=xmlHttp.responseText 
 } 
}
function GetXmlHttpObject()
{
var xmlHttp=null;
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");
  }
 }
return xmlHttp; 
}