// JScript File
function getCookie(c_name)
{
    if (document.cookie.length>0)
    {
    c_start=document.cookie.indexOf(c_name + "=");
    if (c_start!=-1)
        { 
        c_start=c_start + c_name.length+1;
        c_end=document.cookie.indexOf(";",c_start);
        if (c_end==-1) c_end=document.cookie.length;
        return unescape(document.cookie.substring(c_start,c_end));
        } 
    }
    return ""
}

function setCookie(c_name,value,expiredays)
{
    var exdate=new Date();exdate.setDate(exdate.getDate()+expiredays);
    document.cookie=c_name+ "=" +escape(value)+ ((expiredays==null) ? "" : ";expires="+exdate.toGMTString());
}
    
function checkCookie()
{
    nuon5=getCookie('nuon5');
    if (nuon5!=null && nuon5!="")
    {
        //3e visit: hide overlayer
        if(nuon5 == 3)
        {
            ToggleLayer('nuon_overlayer')
        }
        else
        {
            var addvisit = parseInt(nuon5) + 1;
            setCookie('nuon5',addvisit,365);
            window.setTimeout(function() {ToggleLayer('nuon_overlayer')}, 15000);
        }
    }
    else
    {
        setCookie('nuon5',1,365);
        window.setTimeout(function() {ToggleLayer('nuon_overlayer')}, 15000);
    }
   
}

function ToggleLayer(layer)
{
  layer = document.getElementById(layer);
  layer.style.display = (layer.style.display !== "none")? "none":"";
}