function createRequest (url,readyFunction,readyFuncValue) {
    var httpRequest = false;
    if (window.XMLHttpRequest) { // Mozilla, Safari, Opera, Konqueror...
        httpRequest = new XMLHttpRequest();
        if (httpRequest.overrideMimeType) {
            httpRequest.overrideMimeType('text/xml');
            // Podívejte na poznámku o tomto řádku níže
        }
    } else if (window.ActiveXObject) { // Internet Explorer
        try {
            httpRequest = new ActiveXObject("Msxml2.XMLHTTP");
        } catch (e) {
            try {
                httpRequest = new ActiveXObject("Microsoft.XMLHTTP");
            } catch (e) {}
        }
    }

    if (!httpRequest) {
        alert('Can\'t create XMLHTTP instance');
        return false;
    }
    httpRequest.onreadystatechange = function() { contentState(httpRequest,readyFunction,readyFuncValue); };
    httpRequest.open('GET', url, true);
    httpRequest.send(null);

}

function contentState(httpRequest,readyFunction,readyFuncValue) {
    if (httpRequest.readyState == 4) {
        if (httpRequest.status == 200) {
			// call ready function (text, readyFuncValue)
            eval(readyFunction)(httpRequest.responseText,readyFuncValue);
        } else {
            alert('Vyskytol sa problem, kontaktujte administratora a skuste vykonat operaciu este raz.');
        }
    }
}