if (document.images) {
	home0= new Image; home0.src = "home.gif"
	home1 = new Image; home1.src = "home1.gif"
	about0= new Image; about0.src = "about.gif"
	about1= new Image; about1.src = "about1.gif"
	prog0= new Image; prog0.src = "prog.gif"
	prog1= new Image; prog1.src = "prog1.gif"
	cont0= new Image; cont0.src = "cont.gif"
	cont1= new Image; cont1.src = "cont1.gif"
	map0= new Image; map0.src = "map.gif"
	map1= new Image; map1.src = "map1.gif"
}




else {
 home1= ""
	home0= ""
	about1=""
	about0=""
	prog0=""
	prog1=""
	cont0=""
	cont1=""
	map0=""
	map1=""
	
					
	    document.home.src = ""
		 document.about.src = ""
		document.prog.src = ""
		document.cont.src= ""
	document.map.src= ""
		
}