// Half-second timer
var TIMER_DURATION = 500;
// Timer for hiding previous reports links.
var prevrep_timer = null;

/* Start hide timer for previous reports menu. */
function start_prevrep_hide_timer() {
  prevrep_timer = setTimeout("hide_prevrep()", TIMER_DURATION);
}

/* Hide the previous reports menu. */
function hide_prevrep() {
  document.getElementById('previous_reports').style.color = '#999';
  document.getElementById('previous_reports_subnav').style.display = "none";
}

/* Cancel hide of previous reports menu. */
function cancel_prevrep_hide_timer() {
  clearTimeout(prevrep_timer);
}

/* Called onmouseover of Previous Reports. */
function prevrep_over() {
  cancel_prevrep_hide_timer();
  document.getElementById("previous_reports").style.color = '#333';
  document.getElementById("previous_reports_subnav").style.display = "block";
}