/**
 *
 *  Navigation Dropdown Function
 *
**/
function subNavigate(navID, subToggle) {

  var navObject   = document.getElementById(navID);
  var subObject   = new Object();
  var subID       = new String();

  if( typeof(navObject) == 'object' ) {

    subID         = navID.replace('nav-', 'navigation-');
    subObject     = document.getElementById(subID);

    subObject.style.display = subToggle == true ? 'block' : 'none';

    navObject.className = subToggle == true ? 'navigation-hover' : '';

    subObject.onmouseout = function() {
      subNavigate(navID, false);
    }

    navObject.onmouseout = function() {
      subNavigate(navID, false);
    }

  }

} // ! subNavigate()