catedmatoff    = new Image();  catedmatoff.src = "menus/edmat_top_off.jpg";
	 catedmaton     = new Image();  catedmaton.src  = "menus/edmat_top_on.jpg";
	 
	 catclininfooff = new Image();  catclininfooff.src = "menus/clininfo_top_off.jpg";
	 catclininfoon  = new Image();  catclininfoon.src  = "menus/clininfo_top_on.jpg";
	 
	 catmsdsoff = new Image();  catmsdsoff.src = "menus/msds_top_off.jpg";
	 catmsdson  = new Image();  catmsdson.src  = "menus/msds_top_on.jpg";
	 
	 catlatexoff    = new Image();  catlatexoff.src = "menus/latex_top_off.jpg";
	 catlatexon     = new Image();  catlatexon.src  = "menus/latex_top_on.jpg";
	 
	 catifuoff      = new Image();  catifuoff.src = "menus/ifu_top_off.jpg";
	 catifuon       = new Image();  catifuon.src  = "menus/ifu_top_on.jpg";
	 
	 catlabinfooff  = new Image();  catlabinfooff.src = "menus/labinfo_top_off.jpg";
	 catlabinfoon   = new Image();  catlabinfoon.src  = "menus/labinfo_top_on.jpg";
	 
	 catbrooff      = new Image();  catbrooff.src = "menus/bro_top_off.jpg";
	 catbroon       = new Image();  catbroon.src  = "menus/bro_top_on.jpg";
	 
	 catadoff       = new Image();  catadoff.src = "menus/ad_top_off.jpg";
	 catadon        = new Image();  catadon.src  = "menus/ad_top_on.jpg";