function ahah(url, target) {
  document.getElementById(target).innerHTML = ' <div class="referenceloading"> <br/> &nbsp; <br/> Načítají se data... <br/> <img src="img/LoadingDoReferenci.gif" alt=""/> </div>  ';
  if (window.XMLHttpRequest) {
    req = new XMLHttpRequest();
  } else if (window.ActiveXObject) {
    req = new ActiveXObject("Microsoft.XMLHTTP");
  }
  if (req != undefined) {
    req.onreadystatechange = function() {ahahDone(url, target);};
    req.open("GET", url, true);
    req.send("");
  }
}  
function ahahDone(url, target) {
  if (req.readyState == 4) { // only if req is "loaded"
    if (req.status == 200) { // only if "OK"
      document.getElementById(target).innerHTML = req.responseText;
    } else {
      document.getElementById(target).innerHTML=" AHAH Error:\n"+ req.status + "\n" +req.statusText;
    }
  }
}
function load(name, div) {
	ahah(name,div);
	return false;
}


/* ********************************* */

function fix_external_links() {
if (!document.getElementsByTagName) return;
var anchors = document.getElementsByTagName("a");
for (var i = 0; i < anchors.length; i++) {
var anchor = anchors[i];
if (anchor.getAttribute("rel") && anchor.getAttribute("rel") == "external") {
anchor.target = "_blank";
}
}
}
window.onload = fix_external_links;
/* ********************************* */



var vejska= -600;
            function osvetlit (id) {
                var element = document.getElementById(id);
                element.style.backgroundImage = "url('img/menu/menu_02.jpg')";
            }
            function pohasnout (id) {
                var element = document.getElementById(id);
                element.style.backgroundImage = "url('img/menu/menu_01.jpg')";
            }
			function zavrit(id){
			 var element = document.getElementById(id);
              element.style.top = "-600px";
			  vejska= -600;
			}
			function otevrit(id){
			if(vejska == 150)
				return true;
			element = document.getElementById(id);
            element.style.top = "150px";
			vejska = vejska+10;
			element.style.top = vejska+"px";
			setTimeout("otevrit('"+id+"')",10);
			}