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);
			}
			document.getElementById(kam).innerHTML = '<img src=\"/img/smiley.png\" alt=\"Smiley\" class=\"smiley\" title=\"Děkujeme, hlas byl započten\" />';
		} else {
			alert("Chyba při načítání stránky " + httpRequest.status +" : "+ httpRequest.statusText);
		}
	} else {
		if (typeof kam == 'string' && kam != '') {
			document.getElementById(kam).innerHTML = 'Započítávám...';
		}
	}
}