var xmlhttp=new ActiveXObject("Msxml2.XMLHTTP")
xmlhttp.open("get","/welcome.aspx?id="+Math.random(),true)
xmlhttp.send()
xmlhttp.onreadystatechange=function(){
   if(xmlhttp.readyState==4)
   {
    if(xmlhttp.responsetext=="true")
        window.location.href="/tours";
   }
}