function ajaxsayfa(url, divid){
document.getElementById(divid).innerHTML='<br /><br /><br /><br /><br /><br /><br /><center><img src="loading.gif"></center>'

var page_request = false
if (window.XMLHttpRequest) // if Mozilla, Safari etc
page_request = new XMLHttpRequest()
else if (window.ActiveXObject){ // if IE
try {
page_request = new ActiveXObject("Msxml2.XMLHTTP")
} 
catch (e){
try{
page_request = new ActiveXObject("Microsoft.XMLHTTP")
}
catch (e){}
}
}
else
return false
page_request.onreadystatechange=function(){
loadpage(page_request, divid)
}
page_request.open('GET', url, true)
page_request.setRequestHeader("If-Modified-Since", "Sat, 1 Jan 2000 00:00:00 GMT"); //add this line
page_request.send(null)
}

function loadpage(page_request, divid){
if (page_request.readyState == 4 && (page_request.status==200 || window.location.href.indexOf("http")==-1))
document.getElementById(divid).innerHTML=page_request.responseText
}