//Preload images to appear in navigation rollover
var myimages=new Array()
function preloadimages(){
for (i=0;i<preloadimages.arguments.length;i++){
myimages[i]=new Image()
myimages[i].src=preloadimages.arguments[i]
}
}

preloadimages("/images/nav_home_on.gif",
              "/images/nav_home_off.gif",
              "/images/nav_about_on.gif",
              "/images/nav_about_off.gif",
              "/images/nav_members_on.gif",
              "/images/nav_members_off.gif",
              "/images/nav_events_on.gif",
              "/images/nav_events_off.gif",
              "/images/nav_articles_on.gif",
              "/images/nav_articles_off.gif",
              "/images/nav_shop_on.gif",
              "/images/nav_shop_off.gif",
              "/images/nav_links_on.gif",
              "/images/nav_links_off.gif")

//Rollover image change in navigation
function onoff(which,tmpimg) {
  // 0 = off; 1 = on
 document.images.about.src = "/images/nav_about_off.gif";
 document.images.members.src = "/images/nav_members_off.gif";
 document.images.gts.src = "/images/nav_events_off.gif";
 document.images.columns.src = "/images/nav_articles_off.gif";
 if (tmpimg != null && which == 1) {
   var whatToDo = eval("document.images."+tmpimg);
   whatToDo.src = "/images/nav_"+tmpimg+"_on.gif";
 }
}

function highlightMenu(menuName,onORoff) {
 layer_exit();
 var whatToDo = eval("document.images."+menuName);
 whatToDo.src = "/images/nav_"+menuName+(onORoff?"_on":"_off")+".gif";
}