var popout=0;

function menu(x){
	var targetId, targetElement;

		if (popout==0){
			popout=1;
			unshow();
			targetId="menu"+x;
			targetElement = name( targetId);
		targetElement.style.visibility="visible";
	}
}

function name(targetId){
		 if (document.getElementById){
			 targetElement = document.getElementById(targetId);
		  }else if(document.all){
		  	 targetElement = document.all[targetId];
		  }else if(document.layers){
		  	targetElement = document[targetId];
		  }
		  return targetElement;
}

function unshow() {

popout=0;
for(i=1;i<2;i++) {
targetId ="menu"+i;
targetElement = name( targetId);
targetElement.style.visibility="hidden";
 }
}

function okno(Adresa,sirka,vyska)  {
	if(sirka &&vyska){
  	 win2 = window.open(Adresa,'okno','status=no,resizable=yes,scrollbars=no,toolbar=no,location=no,menu=no,width='+sirka+',height='+vyska+'');
	}else{
		win2 = window.open(Adresa,'okno','status=no,resizable=yes,scrollbars=no,toolbar=no,location=no,menu=no');
	}
	return false;
}