function init(){
  SetStatusBarCount(3);
}

SetStatusBarText(1, "[" + x + "," + y + "]");
if(SelRight > SelLeft || SelBottom > SelTop){
  SetStatusBarText(2, (SelRight - SelLeft + 1) + "�~" + (SelBottom - SelTop + 1));
  SetStatusBarText(3, "SUM=" + sum(SelLeft, SelTop, SelRight, SelBottom));
}else{
  SetStatusBarText(2, "");
  SetStatusBarText(3, [x,y]);
}