function Button1(backc) {
document.all.B1.bgColor=backc }

function Button2(backc) {
document.all.B2.bgColor=backc }

function Button3(backc) {
document.all.B3.bgColor=backc }

function Button4(backc) {
document.all.B4.bgColor=backc }

function Button5(backc) {
document.all.B5.bgColor=backc }

function Button6(backc) {
document.all.B6.bgColor=backc }