//preload images
var menu_reviews_in = new Image();
var menu_guidelines_in = new Image();
var menu_exp_opinion_in = new Image();
var menu_login_in = new Image();
var menu_ps_demo_in = new Image();
var menu_cpd_in = new Image();
var menu_home_in = new Image();




menu_reviews_in.src = "images/menu_reviews_in.gif";
menu_guidelines_in.src = "images/menu_guidelines_in.gif";
menu_exp_opinion_in.src = "images/menu_exp_opinion_in.gif";
menu_login_in.src = "images/menu_login_in.gif";
menu_ps_demo_in.src = "images/menu_ps_demo_in.gif";
menu_cpd_in.src = "images/menu_cpd_in.gif";
menu_home_in.src = "images/menu_home_in.gif";



function swapPic(pic, picname) {

   var thePic = eval('document.' + picname);
   thePic.src = pic;

}   



var lastMenu;
var visible;
var hidden;
lastMenu = 'login';

if (document.layers) {
  visible = 'show';
  hidden = 'hide';
} else if (document.all) {
  visible = 'visible';
  hidden = 'hidden';
}

function barTog(menu) {
var menu1;
   if (document.layers) {
     menu1 = document.layers[menu];
   } else if (document.all) {
     menu1 = document.all(menu).style
   }


   if (menu1.visibility == visible) {
     menu1.visibility = hidden;
   }
   else {
     menu1.visibility = visible;
	 document.loginform.username.focus();
   }
   if (lastMenu != menu) {
     closeMenus(lastMenu);
   }
   lastMenu = menu;

}

function closeMenus(menuIn) {

   if (document.layers) {
     menu2 = document.layers[menuIn];
   } else if (document.all) {
     menu2 = document.all(menuIn).style;
   }

   if (menu2.visibility == visible) {
     menu2.visibility = hidden;
   }

}