function makeHttpRequest(url, callback_function, return_xml)

{

   var ajaxRequest;



   if (window.XMLHttpRequest) 

   		{ // Mozilla, Safari,...

       		ajaxRequest = new XMLHttpRequest();

       		if (ajaxRequest.overrideMimeType) 

				{

           			ajaxRequest.overrideMimeType('text/xml');

       			}

   		} 

	else if (window.ActiveXObject) 

		{ // IE

       		try 

				{

           			ajaxRequest = new ActiveXObject("Msxml2.XMLHTTP");

       			} 

			catch (e) 

				{

           			try 

						{

               			ajaxRequest = new ActiveXObject("Microsoft.XMLHTTP");

           				} 

					catch (e) {}

       			}

   		}

   if (!ajaxRequest) 

   		{

       		alert('Unfortunatelly you browser doesn\'t support this feature.');

       		return false;

   		}

   ajaxRequest.onreadystatechange = function() {

       if (ajaxRequest.readyState == 4) {

           if (ajaxRequest.status == 200) {

               if (return_xml) {

                   eval(callback_function + '(ajaxRequest.responseXML)');

               } else {

                   eval(callback_function + '(ajaxRequest.responseText)');

               }

           } else {

               //alert('There was a problem with the request.(Code: ' + ajaxRequest.status + ')');

           }

       }

   }

   ajaxRequest.open('GET', url, true);

   ajaxRequest.send(null);

}



function loadBanner(xml)

{

    var html_content = xml.getElementsByTagName('content').item(0).firstChild.nodeValue;

    var reload_after = xml.getElementsByTagName('reload').item(0).firstChild.nodeValue;

    document.getElementById('ajax-banner').innerHTML = html_content;



    try {

        clearTimeout(to);

    } catch (e) {}



    to = setTimeout("nextAd()", parseInt(reload_after));





}



function nextAd()

{

    var now = new Date();

    var url = '../../ROTBNS/ajax-banner.php?ts=' + now.getTime();

    makeHttpRequest(url, 'loadBanner', true);

}



window.onload = nextAd;