jsHover = function() {
  var hEls = document.getElementById("nav").getElementsByTagName("LI");
  for (var i=0, len=hEls.length; i<len; i++) {
    hEls[i].onmouseover=function() { this.className+=" jshover"; }
    hEls[i].onmouseout=function() { this.className=this.className.replace(" jshover", ""); }
  }
}
if (window.attachEvent && navigator.userAgent.indexOf("Opera")==-1) window.attachEvent("onload", jsHover);


function SetCookie(cookieName, cookieVal) {
	var exp=new Date();
	exp.setTime(exp.getTime()+(365*24*60*60*1000));

	document.cookie=cookieName+'='+cookieVal+'; expires='+exp.toGMTString()+'; path=/';
	}

function showhidemenu(id) {
	var e=document.getElementById('content_'+id);
	if (e) {
		if (e.className=='hidden_content') {
			e.className='visible_content';
			SetCookie('nanod_'+id,'visible');
			}
		else {
			e.className='hidden_content';
			SetCookie('nanod_'+id,'hidden');
			}
		}
	}