// JavaScript Document

function ajax(stranka, kam) {

	var httpRequest;

	if (typeof window.ActiveXObject != 'undefined') {
		httpRequest = new ActiveXObject("Microsoft.XMLHTTP");
	} else {
		httpRequest = new XMLHttpRequest();
	}
	httpRequest.open("GET", stranka, true);
	httpRequest.onreadystatechange = function() {
		processRequest(httpRequest, kam)
	};
	httpRequest.send(null);
}

function processRequest(httpRequest, kam) {
	if (httpRequest.readyState == 4) {
		if (httpRequest.status == 200) {
			if (typeof kam == 'string') {

				document.getElementById(kam).innerHTML = httpRequest.responseText;

			}
			if (typeof kam == 'function') {
				kam(httpRequest.responseText);
			}
		} else {
			alert("Chyba pri nacitani stanky " + httpRequest.status + " : "
					+ httpRequest.statusText);
		}
	} else {
		if (typeof kam == 'string' && kam != '') {
			document.getElementById(kam).innerHTML = '<span>Pracuji ...</span>';

		}
	}

}