function supportDOM(){return document.getElementById&&(window.attachEvent||window.addEventListener);}
function ie501win(){return document.all&&!document.fireEvent&&!window.opera;}
function addEvent(obj,evType,fn){
  if(obj.addEventListener){
    obj.addEventListener(evType,fn,false);
    return true;
  }else if(obj.attachEvent){
    return obj.attachEvent('on'+evType,fn);
  }else if(document.all&&(!document.mimeType)){
    eval('obj.on'+evType+'=fn');
	return true;
  }else{
	return false;
  }
}
function removeEvent(obj,evType,fn){
  if(obj.addEventListener){
    obj.removeEventListener(evType,fn,false);
    return true;
  }else if(obj.attachEvent){
    return obj.detachEvent('on'+evType,fn);
  }else if(document.all&&(!document.mimeType)){
    eval('obj.on'+evType+'=null');
	return true;
  }else{
	return false;
  }
}

/* Loginscript */
var strlogin='login';
var ologinlnk,ologinfrm;
function init(){
  if(!ie501win()&&supportDOM){
    var ologindiv=document.getElementById(strlogin);
    if (ologindiv){
      ologinlnk=ologindiv.getElementsByTagName('H3').item(0);
      ologinfrm=ologindiv.getElementsByTagName('FORM').item(0);
      ologinlnk.onclick=togglelogin;
      ologindiv.className='login';
    }
  }
}
function togglelogin(){
  if(ologinfrm&&ologinfrm.style.display=='block')hidelogin();
  else showlogin();
}
function showlogin(){
  if(ologinfrm)ologinfrm.style.display='block';
}
function hidelogin(){
  if(ologinfrm)ologinfrm.style.display='none';
}

/* RTVA */
var strrtva='rtva';
var rtvaspeed=3000;
var rtvaindex=0;
var rtva;
function initrtva(){
  rtva=document.getElementById(strrtva).getElementsByTagName('LI');
  switchrtva();
}
function switchrtva(){
  for(var i=0;i<rtva.length;i++) rtva[i].style.visibility='hidden';
  if((rtvaindex+1)<rtva.length) rtvaindex++;
  else rtvaindex=0;
  rtva[rtvaindex].style.visibility='visible';
  setTimeout('switchrtva()',rtvaspeed);
}

addEvent(window,'load',init);
addEvent(document,'click',hidelogin);