function irekaeB_1(tbl1){
    btnmj = "btn" + tbl1
  if ( btnmj == "btn1"){
     document.images[btnmj].src = "img/navion.jpg";
   }
   if ( btnmj == "btn2"){
     document.images[btnmj].src = "img/leftbanner2on.jpg";
  } 
   if ( btnmj == "btn3"){
     document.images[btnmj].src = "banner3.jpg";
}
   if ( btnmj == "btn4"){
     document.images[btnmj].src = "banner4.jpg";
}
 if ( btnmj == "btn5"){
     document.images[btnmj].src = "banner5.jpg";
}
}
function irekaeB_2(tbl2){
  btnmj = "btn" + tbl2
   if ( btnmj == "btn1"){
     document.images[btnmj].src = "img/navi.jpg";
   }
   if ( btnmj == "btn2"){
     document.images[btnmj].src = "img/leftbanner2off.jpg";
   }
   if ( btnmj == "btn3"){
     document.images[btnmj].src = "banner03.jpg";
   }
   if ( btnmj == "btn4"){
     document.images[btnmj].src = "banner04.jpg";
}
 if ( btnmj == "btn5"){
     document.images[btnmj].src = "banner05.jpg";
}
}