bt01= new Image();
bt01.src = "images/bt01h.gif"

bt02= new Image();
bt02.src = "images/bt02h.gif"

bt03= new Image();
bt03.src = "images/bt03h.gif"

bt04= new Image();
bt04.src = "images/bt04h.gif"

bt05= new Image();
bt05.src = "images/bt05h.gif"

bt06= new Image();
bt06.src = "images/bt06h.gif"

bt07= new Image();
bt07.src = "images/bt07h.gif"

bt08= new Image();
bt08.src = "images/bt08h.gif"

bt09= new Image();
bt09.src = "images/bt09h.gif"

bt10= new Image();
bt10.src = "images/bt10h.gif"

bt11= new Image();
bt11.src = "images/bt11h.gif"

bt12= new Image();
bt12.src = "images/bt12h.gif"

bt13= new Image();
bt13.src = "images/bt13h.gif"

bt14= new Image();
bt14.src = "images/bt14h.gif"

bt15= new Image();
bt15.src = "images/bt15h.gif"

bt16= new Image();
bt16.src = "images/bt16h.gif"

bt17= new Image();
bt17.src = "images/bt17h.gif"

bt18= new Image();
bt18.src = "images/bt18h.gif"

bt19= new Image();
bt19.src = "images/bt19h.gif"

bt20= new Image();
bt20.src = "images/bt20h.gif"

bt21= new Image();
bt21.src = "images/bt21h.gif"

bt22= new Image();
bt22.src = "images/bt22h.gif"