but11 = new Image();
but11.src = "/pictures/but11.gif"
but12 = new Image();
but12.src = "/pictures/but12.gif"

but21 = new Image();
but21.src = "/pictures/but21.gif"
but22 = new Image();
but22.src = "/pictures/but22.gif"

but31 = new Image();
but31.src = "/pictures/but31.gif"
but32 = new Image();
but32.src = "/pictures/but32.gif"

but41 = new Image();
but41.src = "/pictures/but41.gif"
but42 = new Image();
but42.src = "/pictures/but42.gif"

but51 = new Image();
but51.src = "/pictures/but51.gif"
but52 = new Image();
but52.src = "/pictures/but52.gif"

but61 = new Image();
but61.src = "/pictures/but61.gif"
but62 = new Image();
but62.src = "/pictures/but62.gif"

but71 = new Image();
but71.src = "/pictures/but71.gif"
but72 = new Image();
but72.src = "/pictures/but72.gif"