var xmlHttp;
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;
}
function displayPersons(MenuID)
	{
		xmlHttp=GetXmlHttpObject();
		if (xmlHttp==null)
		 {
			 alert ("Browser does not support HTTP Request");
			 return;
		 }
		param="?menu="+MenuID+"&category="+document.getElementById("categories").value;

		var url="index.php"+param;
		xmlHttp.onreadystatechange=stateChanged;
		xmlHttp.open("GET",url,true);
		xmlHttp.send(null);
	}
	function stateChanged()
	{
		 if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete")
		 	document.getElementById("persons").innerHTML=xmlHttp.responseText;
	}