var div = document.getElementById('vypis');

var handleSuccess = function(o){
	if(o.responseText !== undefined){
		div.innerHTML = o.responseText;
	}
}

var handleFailure = function(o){
	if(o.responseText !== undefined){
		div.innerHTML = "Status code message: " + o.statusText + "";
	}
}

var callback =
{
  success:handleSuccess,
  failure:handleFailure
};

function makeRequest(sUrl){
    var request = YAHOO.util.Connect.asyncRequest('GET', 'lib/' + sUrl, callback);
}