function ajax( options ) {
	options = {
		requesttype: options.requesttype || "GET",
		type: options.type || "xml",
		url: options.url || "",
		timeout: options.timeout || 5000,
		onComplete: options.onComplete || function(){},
		onError: options.onError || function(){},
		onSuccess: options.onSuccess || function(){},
		data: options.data || ""
	};
	if ( typeof XMLHttpRequest == "undefined" ) {
		XMLHttpRequest = function(){
			return new ActiveXObject(navigator.userAgent.indexOf("MSIE 5") >= 0 ? "Microsoft.XMLHTTP" : "Msxml2.XMLHTTP");
		};
	}
	var xml = new XMLHttpRequest();
	xml.open(options.requesttype, options.url, true);
	if(options.data!='') {
         xml.setRequestHeader('Content-Type','application/x-www-form-urlencoded; charset=UTF-8;');
	}
	var timeoutLength = options.timeout;
	var requestDone = false;
		setTimeout(function() {requestDone=true;},timeoutLength);
	xml.onreadystatechange = function() {
	   if(xml.readyState == 4 && !requestDone) {
	      if(httpSuccess(xml)) {
		     options.onSuccess(httpData(xml,options.type));
		  } else {
		     options.onError();
		  }
	      options.onComplete();
	      xml = null;
	   }
	};
	xml.send(options.data);
	function httpSuccess(r) {
	   try {
	      return !r.status && location.protocol == "file:" ||
		  		 (r.status >=200 && r.status < 300) ||
				 r.status == 304 ||
				 navigator.userAgent.indexOf("Safari") >= 0
				 && typeof r.status == "undefined";
	   } catch(e) {}
	   
	   return false;
	}
	function httpData(r,type) {
	   var ct = r.getResponseHeader("content-type");
	   var data = !type && ct && ct.indexOf("xml") >= 0;
	   
	   data = type == "xml" || data ? r.responseXML : r.responseText;
	   
	   if(type=="script")
	      eval.call(window, data);
		  
	   return data;
	}
}