if (document.images) {
	myb1on = new Image();
	myb1on.src = "/images/btn_profile_on.gif";
	myb1off = new Image();
	myb1off.src = "/images/btn_profile.gif";
	myb2on = new Image();
	myb2on.src = "/images/btn_blog_on.gif";
	myb2off = new Image();
	myb2off.src = "/images/btn_blog.gif";
	myb3on = new Image();
	myb3on.src = "/images/btn_exhibition_on.gif";
	myb3off = new Image();
	myb3off.src = "/images/btn_exhibition.gif";
	myb4on = new Image();
	myb4on.src = "/images/btn_book_on.gif";
	myb4off = new Image();
	myb4off.src = "/images/btn_book.gif";
	myb5on = new Image();
	myb5on.src = "/images/btn_shop_on.gif";
	myb5off = new Image();
	myb5off.src = "/images/btn_shop.gif";

	tab1on = new Image();
	tab1on.src = "/images/tabbtn_top_on.gif";
	tab1off = new Image();
	tab1off.src = "/images/tabbtn_top_off.gif";
	
	tab2on = new Image();
	tab2on.src = "/images/tabbtn_profile_on.gif";
	tab2off = new Image();
	tab2off.src = "/images/tabbtn_profile_off.gif";
	
	tab3on = new Image();
	tab3on.src = "/images/tabbtn_blog_on.gif";
	tab3off = new Image();
	tab3off.src = "/images/tabbtn_blog_off.gif";
	
	tab4on = new Image();
	tab4on.src = "/images/tabbtn_circlemypage_on.gif";
	tab4off = new Image();
	tab4off.src = "/images/tabbtn_circlemypage_off.gif";
	
	tab5on = new Image();
	tab5on.src = "/images/tabbtn_exhibition_on.gif";
	tab5off = new Image();
	tab5off.src = "/images/tabbtn_exhibition_off.gif";
	
	tab6on = new Image();
	tab6on.src = "/images/tabbtn_book_on.gif";
	tab6off = new Image();
	tab6off.src = "/images/tabbtn_book_off.gif";
	
	tab7on = new Image();
	tab7on.src = "/images/tabbtn_shop_on.gif";
	tab7off = new Image();
	tab7off.src = "/images/tabbtn_shop_off.gif";

	mys1on = new Image();
	mys1on.src = "/images/tabbtn_minimail_on.gif";
	mys1off = new Image();
	mys1off.src = "/images/tabbtn_minimail_off.gif";
	mys2on = new Image();
	mys2on.src = "/images/tabbtn_acceess_on.gif";
	mys2off = new Image();
	mys2off.src = "/images/tabbtn_acceess_off.gif";
	mys3on = new Image();
	mys3on.src = "/images/tabbtn_basic_on.gif";
	mys3off = new Image();
	mys3off.src = "/images/tabbtn_basic_off.gif";

	ccl1on = new Image();
	ccl1on.src = "/images/tabbtn_circletop_on.gif";
	ccl1off = new Image();
	ccl1off.src = "/images/tabbtn_circletop_off.gif";
	ccl2on = new Image();
	ccl2on.src = "/images/tabbtn_circle_on.gif";
	ccl2off = new Image();
	ccl2off.src = "/images/tabbtn_circle_off.gif";
}