b1=new Image(153,33); b1.src="/images/world_main_blank.jpg"
b2=new Image(153,33); b2.src="/images/world_main_net_wrap.jpg"
b3=new Image(153,33); b3.src="/images/world_main_baler_twine.jpg"
b4=new Image(153,33); b4.src="/images/world_main_silage_film.jpg"
b5=new Image(153,33); b5.src="/images/world_main_other_products.jpg"

b6=new Image(138,25); b6.src="/images/btn_net_wrap_off.gif"
b7=new Image(138,25); b7.src="/images/btn_net_wrap_on.gif"

b8=new Image(138,26); b8.src="/images/btn_baler_twine_off.gif"
b9=new Image(138,26); b9.src="/images/btn_baler_twine_on.gif"

b10=new Image(138,26); b10.src="/images/btn_silage_film_off.gif"
b11=new Image(138,26); b11.src="/images/btn_silage_film_on.gif"

b12=new Image(138,25); b12.src="/images/btn_other_products_off.gif"
b13=new Image(138,25); b13.src="/images/btn_other_products_on.gif"