var podpora=0;
if(document.getElementsByTagName&&document.createElement && RegExp && document.childNodes){podpora=1}else{podpora=0}
var agt = navigator.userAgent.toLowerCase();if(agt.indexOf("netscape")!=-1){podpora=0};if(agt.indexOf('mac')!=-1){podpora=0};
var activateMenu = function(){
var ie=0;
	var navroot = document.getElementById("menu");
	if(document.all && document.getElementById("menu").currentStyle){ie=1;}
	if(window.opera){ie=0;}
	var lis=navroot.getElementsByTagName("LI");  
	for(var i=0; i<lis.length; i++){
		//if(lis[i].className=="akt"){lis[i].setAttribute("id","aktpol")}
		if(lis[i].lastChild.tagName){
			if(lis[i].lastChild.tagName=="UL"){//ma syny

			   //if(lis[i].className!="akt"){if(ie==1){lis[i].className="norozb2";}else{lis[i].className="norozb3";}}

                if(ie==1){
                if(lis[i].className!="akt"){lis[i].className="norozb2";}

                lis[i].onmouseover=function() {this.lastChild.className="zobrazeny";if(this.className!="akt"){this.className="rozb2";this.style.zIndex="50";}//;
                }
				lis[i].onmouseout=function() {this.lastChild.className="skryty";if(this.className=="rozb2"){this.className="norozb2";this.style.zIndex="30";}//;
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                }
                else{
                if(lis[i].className!="akt"){lis[i].className="norozb3";}
                lis[i].onmouseover=function() {if(this.className!="akt"){this.className="rozb3";}}
				lis[i].onmouseout=function() {if(this.className=="rozb3"){this.className="norozb3";}}
                }
            }
        }
		else{//nema syny
           if(ie==1){
        		if(lis[i].className!="akt"){lis[i].className="norozb";
          			if(!lis[i].lastChild.tagName){//jde-li o text neuzavreny v tagu
          				lis[i].onmouseover=function() {this.className="rozb";}
          				lis[i].onmouseout=function() {if(this.className=="rozb"){this.className="norozb";}}
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            }
    	}
    }

}

function init(){
	if(podpora==1){
   		activateMenu();
	}
   else{
    	var links = new Array();
		links=document.getElementsByTagName("link");
		for (i=0; i<links.length; i++){
  			if ((links[i].getAttribute("rel").indexOf("stylesheet")!=-1) && (links[i].getAttribute("title"))) {
                if(links[i].getAttribute("title")=="rozbalovaci menu"){links[i].disabled=true;}
            }
  		}
   }
}