function ajaxNew() {
	var xmlHttp;
	try {
  		// Firefox, Opera 8.0+, Safari
  		xmlHttp=new XMLHttpRequest();
  	} 
  	catch (e) {
  		// Internet Explorer
  		try {
    		xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
    	}
  		catch (e) {
    		try {
      		xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
      	}
    		catch (e) {
      		alert("Your browser does not support AJAX!");
      		return false;
      	}
    	}
	}
	return xmlHttp;
}
function ajaxHandler(handler,xmlHttp) {
	if(xmlHttp.readyState==4) {
		handler(xmlHttp.responseText);
	}
}
function ajaxGet(handler,url,async,returnXML) {
	//NOTE: ASYNCRONOUS GET DOES NOT CURRENTLY WORK.

	//Make async and returnXML default to false;
	var async = (async == null) ? false : 'async';
	var returnXML = (returnXML == null) ? false : 'xml';
	//Create a new ajax object.
	xmlHttp=ajaxNew();
	if (async=='async') {
		//Set it to use a handler, which is a function name already created and which is passed ot this function.
		xmlHttp.onreadystatechange=ajaxHandler(handler,xmlHttp);
	}
	//Prepare the request.  True means asyncronous (don't wait).  Falls means syncronous (wait).
	xmlHttp.open("GET",url,async);
	//Send the get.  xmlHttp.readyState will change to 4 when this is complete and a responce is returned.
	xmlHttp.send(null);
	if (async!='async') { 
		//Handle the responce.
		handler(xmlHttp.responseText);
	}
}
function ajaxGetArray(handler,url,async) {
	ajaxGet(handler,url,async,'xml');
}
function ajaxError() {
	alert('Server Error.  Please try again or report this error to the webmaster.');
	return false;
}
function ajaxData(text, tag) {
	//The input for this looks like xml, but isn't.
	//Tags may not be nested, and other requirements are loose.
	//example: <field1>data</field1><field2>more data</field2>
	//         ajaxData(field2)=='more data';
	
	if (text.indexOf('<'+tag+'>')==-1) return false;
	if (text.indexOf('</'+tag+'>')==-1) return false;
	
	var start=text.indexOf('<'+tag+'>')+tag.length+2;
	var end=text.indexOf('</'+tag+'>');
	return text.substring(start,end);	
}
function ajaxError(text) {
	var err=ajaxData(text, 'error');
	
	if (err!=false) {
		alert(err);
		return true;
	}
	
	return false;	
}