function set_cookie ( name, value, exp_seconds, path, domain, secure )
{
  var cookie_string = name + "=" + escape ( value );

  if ( exp_seconds )
  {
    var expires = new Date ();
    ex=expires.valueOf()+exp_seconds*1000;
    expires = new Date (ex);
    cookie_string += "; expires=" + expires.toGMTString();
  }

  if ( path )
        cookie_string += "; path=" + escape ( path );

  if ( domain )
        cookie_string += "; domain=" + escape ( domain );

  if ( secure )
        cookie_string += "; secure";

  document.cookie = cookie_string;
}

function delete_cookie ( cookie_name )
{
  var cookie_date = new Date ( );  // current date & time
  cookie_date.setTime ( cookie_date.getTime() - 1 );
  document.cookie = cookie_name += "=; expires=" + cookie_date.toGMTString();
}

function get_cookie ( cookie_name )
{
  var results = document.cookie.match ( cookie_name + '=(.*?)(;|$)' );

  if ( results )
    return ( unescape ( results[1] ) );
  else
    return null;
}

function tryShowMenuNode(nodeid)
{
o=document.getElementById("submenu"+nodeid);
if (!o)
  ret=true;
else
  {
  c=o.style.visibility;
  if ((c=="hidden") && (!hideall))
    {
    o.style.visibility="";
    o.style.position="";
    set_cookie ("expnode["+nodeid+"]", 1, 604800);
    }
  else
    {
    o.style.visibility="hidden";
    o.style.position="absolute";
    if (!hideall)
      delete_cookie ("expnode["+nodeid+"]");
    }
  ret=false;
  }
return (ret)
}

function tryShowMenuNode2(nodeid,canclick)
{
xret=tryShowMenuNode(nodeid);
return (xret);
}


function xzoom(a,xid)
{
window.open("getimage.php?a="+a+"&id="+xid,"_blank","width=300px,height=300px");
}