function AutoBtn(Num){
btnObj = eval("NewBtn" + Num);
boxObj = eval("NewBox" + Num);
for(i=1;i<5;i++){
if(i == 1){
eval("NewBtn" + i).className = "LB";
}else if(i == 2){
eval("NewBtn" + i).className = "CB";
}else if(i == 3){
eval("NewBtn" + i).className = "CB";
}else if(i == 4){
eval("NewBtn" + i).className = "RB";
}
eval("NewBox" + i).style.display = "none";
}

if(Num == 1){
btnObj.className = "LBOn";
}else if(Num == 2){
btnObj.className = "CBOn";
}else if(Num == 3){
btnObj.className = "CBOn";
}else if(Num == 4){
btnObj.className = "RBOn";
}
boxObj.style.display = "";
}