function focusmenu(a){
	a.className = "menu_focus";
}
function blurmenu(a){
	a.className = "menu";
}
function focusmenu2(a){
	a.className = "menu_left_focus";
}
function blurmenu2(a){
	a.className = "menu_left";
}
function cb(btn){
	src  = btn.src;
	sp   = src.split(".gif");
	last = sp[0].substring(sp[0].length-2, sp[0].length);
	if(last != "_v"){
		img = sp[0] + "_v.gif";
	}else{
		img = sp[0].substring(0,sp[0].length-2) + ".gif";
	}
	btn.src = img;
}