function $g(el,check) {
  if (typeof check == 'undefined')  check = false;
  if (check)  return (document.getElementById(el)) ? true : false;
  else        return document.getElementById(el);
}

var nav_submenus  = new Array();
var old_onload    = window.onload;
window.onload = function() {
  if (typeof old_onload == 'function') old_onload();


  $g('nav_racing').onmouseover       = function() { $g('nav_racing_holder').style.display = 'block'; };
  $g('nav_racing').onmouseout        = function() { $g('nav_racing_holder').style.display = 'none';  };
  $g('nav_hospitality').onmouseover  = function() { $g('nav_hospitality_holder').style.display = 'block'; };
  $g('nav_hospitality').onmouseout   = function() { $g('nav_hospitality_holder').style.display = 'none';  };
  $g('nav_conference').onmouseover   = function() { $g('nav_conference_holder').style.display = 'block'; };
  $g('nav_conference').onmouseout    = function() { $g('nav_conference_holder').style.display = 'none';  };
  $g('nav_about').onmouseover        = function() { $g('nav_about_holder').style.display = 'block'; };
  $g('nav_about').onmouseout         = function() { $g('nav_about_holder').style.display = 'none';  };

//   for (var i in nav_submenus) if ($g(nav_submenus[i].element,true)) {
//     $g(nav_submenus[i].element).onmouseover  =  function(e) {
//                                                   if (typeof e == 'undefined' || !$g(e.target.parentNode.parentNode.id,true))  return;
//                                                   $g(e.target.parentNode.parentNode.id).style.display  = 'block';
//                                                   $g(e.target.id+'_children').style.display = 'block';
//                                                   $g(e.target.id+'_children').onmouseover   = function() { $g(e.target.id+'_children').style.display = 'block'; };
//                                                   $g(e.target.id+'_children').onmouseout    = function() { $g(e.target.id+'_children').style.display = 'none'; };
//                                                 };
//     $g(nav_submenus[i].element).onmouseout  =  function(e) {
//                                                   if (typeof e == 'undefined' || !$g(e.target.parentNode.parentNode.id,true))  return;
//                                                   $g(e.target.parentNode.parentNode.id).style.display  = 'none';
//                                                   $g(e.target.id+'_children').style.display  = 'none';
//                                                 };
//   }
  if (document.getElementById('innerpagesCol1') && document.getElementById('innerpagesCol2') && document.getElementById('innerpagesCol3')) {
    var max = 0;
    for (var i=1;i<=3;i++) if ($g('innerpagesCol'+i).offsetHeight > max) max = $g('innerpagesCol'+i).offsetHeight;
    if (max-20 > $g('innerpagesCol2').offsetHeight)  $g('innerpagesCol2').style.height = (max-20)+'px';
  }
}