function setimg1(IMG) { document.bt1.src= IMG }
function setimg2(IMG) { document.bt2.src= IMG }
function setimg3(IMG) { document.bt3.src= IMG }
function setimg4(IMG) { document.bt4.src= IMG }
function setimg5(IMG) { document.bt5.src= IMG }
function setimg6(IMG) { document.bt6.src= IMG }
function setimg7(IMG) { document.bt7.src= IMG }
function setimg8(IMG) { document.bt8.src= IMG }
function setimg9(IMG) { document.bt9.src= IMG }
function setimg10(IMG) { document.bt10.src= IMG }
function setimg11(IMG) { document.bt11.src= IMG }
function setimg12(IMG) { document.bt12.src= IMG }
function setimg13(IMG) { document.bt13.src= IMG }
function setimg14(IMG) { document.bt14.src= IMG }
function setimg15(IMG) { document.bt15.src= IMG }
function setimg16(IMG) { document.bt16.src= IMG }
function setimg17(IMG) { document.bt17.src= IMG }
function setimg18(IMG) { document.bt18.src= IMG }
function setimg19(IMG) { document.bt19.src= IMG }