/* imgSwap() is an image swapping function. It takes x arguments,
   the image name (set in the img tag) and 
   a graphic name (set in the script when declaring a new image). 
*/

   // main toolbar.
 
   news_off             = new Image; news_off.src             = "images/mnu_btn_off.gif";
   news_on              = new Image; news_on.src              = "images/mnu_btn_on.gif";
   executive_off        = new Image; executive_off.src        = "images/mnu_btn_off.gif";
   executive_on         = new Image; executive_on.src         = "images/mnu_btn_on.gif";
   members_off          = new Image; members_off.src          = "images/mnu_btn_off.gif";
   members_on           = new Image; members_on.src           = "images/mnu_btn_on.gif";
   individual_off       = new Image; individual_off.src       = "images/mnu_btn_off.gif";
   individual_on        = new Image; individual_on.src        = "images/mnu_btn_on.gif";
   institution_off      = new Image; institution_off.src      = "images/mnu_btn_off.gif";
   institution_on       = new Image; institution_on.src       = "images/mnu_btn_on.gif";
   about_off            = new Image; about_off.src            = "images/mnu_btn_off.gif";
   about_on             = new Image; about_on.src             = "images/mnu_btn_on.gif";
   association_off      = new Image; association_off.src      = "images/mnu_btn_off.gif";
   association_on       = new Image; association_on.src       = "images/mnu_btn_on.gif";
   membership_off       = new Image; membership_off.src       = "images/mnu_btn_off.gif";
   membership_on        = new Image; membership_on.src        = "images/mnu_btn_on.gif";
   fee_off              = new Image; fee_off.src              = "images/mnu_btn_off.gif";
   fee_on               = new Image; fee_on.src               = "images/mnu_btn_on.gif";
   journal_off          = new Image; journal_off.src          = "images/mnu_btn_off.gif";
   journal_on           = new Image; journal_on.src           = "images/mnu_btn_on.gif";
   research_off         = new Image; research_off.src         = "images/mnu_btn_off.gif";
   research_on          = new Image; research_on.src          = "images/mnu_btn_on.gif";
   issues_off           = new Image; issues_off.src           = "images/mnu_btn_off.gif";
   issues_on            = new Image; issues_on.src            = "images/mnu_btn_on.gif";
   links_off            = new Image; links_off.src            = "images/mnu_btn_off.gif";
   links_on             = new Image; links_on.src             = "images/mnu_btn_on.gif";
   join_off             = new Image; join_off.src             = "images/mnu_btn_off.gif";
   join_on              = new Image; join_on.src              = "images/mnu_btn_on.gif";
   wiwe_off             = new Image; wiwe_off.src             = "images/mnu_btn_off.gif";
   wiwe_on              = new Image; wiwe_on.src              = "images/mnu_btn_on.gif";
   sitemap_off          = new Image; sitemap_off.src          = "images/mnu_btn_off.gif";
   sitemap_on           = new Image; sitemap_on.src           = "images/mnu_btn_on.gif";
   srch_off             = new Image; srch_off.src             = "images/mnu_btn_off.gif";
   srch_on              = new Image; srch_on.src              = "images/mnu_btn_on.gif";


   // used to swap 2 images
   function imgSwap(imgOn, imgOff)
   {
     imgOn.src = imgOff.src;
   }