// JavaScript Document
var last_open = [];
var last_show;
var up_hover;
function activateMenu(nav,prvni) {
  var i = 0;
  navroot = document.getElementById(nav);
  var lis=navroot.getElementsByTagName("LI");
  for (i=0; i<lis.length; i++){      
    if(lis[i].lastChild.tagName=="UL" ){      
      if (lis[i].firstChild.className != 'active submenu' ) lis[i].lastChild.style.display="none";
      if (!i && prvni) lis[i].lastChild.style.display="block";
      lis[i].onmouseover=function(){         
          if (last_show) last_show.style.display="none";     
          this.lastChild.style.display="block"; 
          last_show = this.lastChild;
         
      }
      //lis[i].onmouseout=function() { this.lastChild.style.display="none"; }
    }    
  }
}