/**
 *
 *  MyNetworkTV
 *  Sub Navigation Dropdown
 *
**/

function subnavToggle(sourceID, subnavID) {

  var subnavObject  = document.getElementById('sub-nav-' + subnavID);
  var sourceObject  = document.getElementById(sourceID);

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

    subnavObject.style.visibility = 'visible';
    document.getElementById('nav-' + subnavID).style.backgroundColor = '#000000';
    // document.getElementById('nav-' + subnavID + '-rollover').style.visibility = 'visible';

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

      sourceObject.onmouseout = function() {
        document.getElementById('nav-' + subnavID).style.backgroundColor = 'transparent';
        document.getElementById('sub-nav-' + subnavID).style.visibility = 'hidden';
        // document.getElementById('nav-' + subnavID + '-rollover').style.visibility = '';
      }

    }

  }

} // ! subnavToggle()