/* ********************************************************** */
/*                       ajax functions                       */
/* ********************************************************** */

/* returns an XmlHttpObject */
function GetXmlHttpObject()
{
	if (window.XMLHttpRequest)
	{
  		// code for IE7+, Firefox, Chrome, Opera, Safari
		return new XMLHttpRequest();
	}
	if (window.ActiveXObject)
  	{
		  // code for IE6, IE5
  		return new ActiveXObject("Microsoft.XMLHTTP");
  	}
	
	return null;
}

/* loads divName with the content returned by url */
function loadDiv(url, divName)
{
	xmlhttp=GetXmlHttpObject();
	xmlhttp.open("GET",url,false);
	xmlhttp.send(null);
	document.getElementById(divName).innerHTML=xmlhttp.responseText;
}