Someone

version.extensions.HelloWorldMacro = { major: 0, minor: 1, revision: 1, date: new Date(2007,30,07),
	source: "http://www.resedarobotics.com/#AjaxPlugin"
};

function createaRequestObject() {
    var ro;
    var browser = navigator.appName;
    if(browser == "Microsoft Internet Explorer"){
        ro = new ActiveXObject("Microsoft.XMLHTTP");
    }else{
        ro = new XMLHttpRequest();
    }
    return ro;
}
var httpO = createaRequestObject();
function sndaReq(action) {
    httpO.open('get', 'rpc.php?action='+action);
    httpO.onreadystatechange = handleaResponse;
    httpO.send(null);
}
function handleaResponse() {
    if(httpO.readyState == 4){
        wikify(httpO.responseText, place);
    }
}

config.macros.AjaxItem = {} 
config.macros.helloWorld.handler = function (place,macroName,params,wikifier,paramString,tiddler) {
    sndaReg(params[0]);        
}