btn_topmenu_home=new Image();
btn_topmenu_home.src="/expert/topmenu_home.gif";
btn_topmenu_homeRO=new Image();
btn_topmenu_homeRO.src="/expert/topmenu_homeRO.gif";

btn_topmenu_english=new Image();
btn_topmenu_english.src="/expert/topmenu_english.gif";
btn_topmenu_englishRO=new Image();
btn_topmenu_englishRO.src="/expert/topmenu_englishRO.gif";

btn_signup=new Image();
btn_signup.src="/images/btn_signup.gif";
btn_signupRO=new Image();
btn_signupRO.src="/images/btn_signupRO.gif";