function newImage(arg) {
 if (document.images) {
  rslt = new Image();
  rslt.src = arg;
  return rslt;
 }
}

function changeimages() {
 if (document.images && (preloadFlag == true)) {
  for (var i=0; i<changeimages.arguments.length; i+=2) {
   document[changeimages.arguments[i]].src = changeimages.arguments[i+1];
  }
 }
}

var preloadFlag = false;
function preloadimages() {
 if (document.images) {

  nav_about_on2 = newImage("../images/nav-about.gif");
  nav_about_on = newImage("../images/nav-about-on.gif");

  nav_donate_on2 = newImage("../images/nav-donate.gif");
  nav_donate_on = newImage("../images/nav-donate-on.gif");

  nav_ministries_on2 = newImage("../images/nav-ministries.gif");
  nav_ministries_on = newImage("../images/nav-ministries-on.gif");

  nav_help_on2 = newImage("../images/nav-help.gif");
  nav_help_on = newImage("../images/nav-help-on.gif");
  
  nav_jobs_on2 = newImage("../images/nav-jobs.gif");
  nav_jobs_on = newImage("../images/nav-jobs-on.gif");
  
  nav_contact_on2 = newImage("../images/nav-contact.gif");
  nav_contact_on = newImage("../images/nav-contact-on.gif");
  
  nav_events_on2 = newImage("../images/nav-events.gif");
  nav_events_on = newImage("../images/nav-events-on.gif"); 

  preloadFlag = true;
 }
}