var tiden;

var knapper = new Array("menu-om", "menu-studier", "menu-aktuelt", "menu-fou", "menu-student", "menu-bibliotek-bibsys", "menu-bibliotek-databaser", "menu-bibliotek-oppslagsverk", "menu-bibliotek-elektronisk", "menu-bibliotek-emneportal", "menu-bibliotek-fagsider", "menu-bibliotek-hyllene", "menu-bibliotek-pensumlister", "menu-bibliotek-ordboker");

var knapper_elm = new Array();
var lastet=false;

function init() {

  for (var i=0; i<knapper.length; i++) {
      knapper_elm[i] = document.getElementById(knapper[i]);
  }
  avmeny();
  lastet=true;
}

function vismeny() {
  if (! lastet) return;
  beholdmeny();
  var argstr=" ";
  for (var j=0;j<arguments.length;j++)
    argstr += " " + arguments[j];
  argstr+= " ";

  for (var i=0; i<knapper.length;i++) {
   if (argstr.indexOf(" " + knapper[i] + " ") != -1)
      knapper_elm[i].style.visibility="visible";
    else
      knapper_elm[i].style.visibility="hidden";
  }
}

//Ny metode for å slå av menyer

function avmeny() {
tiden=setTimeout('vismeny()',500);
}

function beholdmeny() {
if(tiden){
clearTimeout(tiden);}
}

function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_jumpMenu(targ,selObj,restore){ //v3.0
  eval(targ+".location='"+selObj.options[selObj.selectedIndex].value+"'");
  if (restore) selObj.selectedIndex=0;
}

function MM_jumpMenuGo(selName,targ,restore){ //v3.0
  var selObj = MM_findObj(selName); if (selObj) MM_jumpMenu(targ,selObj,restore);
}