function keydownEvent() {
  if(event.ctrlKey == true || event.ctrlLeft == true){
    alert("Ctrl Å°¸¦ »ç¿ëÇÏ½Ç ¼ö ¾ø½À´Ï´Ù.");
  }else if(event.button ==2){
    alert("¿À¸¥ÂÊ ¹öÆ°À» »ç¿ëÇÏ½Ç ¼ö ¾ø½À´Ï´Ù.");
    return;
  }
  if(event.keyCode=="116")
  {
    event.keyCode=38;
    alert('F5 Key(Refresh)´Â ¿À·ù¸¦ ¹ß»ý½Ãų ¼ö ÀÖ¾î\n\n»ç¿ëÇÏ½Ç ¼ö ¾ø½À´Ï´Ù.');
    event.returnValue=false;	
  }
}

function mouseEvent() {
  if(event.button ==2){
    alert("¿À¸¥ÂÊ ¹öÆ°À» »ç¿ëÇÏ½Ç ¼ö ¾ø½À´Ï´Ù.");
    return;
  }
}

/*
document.onclick = mouseEvent;
document.ondblclick = mouseEvent;
document.onkeydown = keydownEvent;
document.onkeyup = keydownEvent;
document.onmousedown = mouseEvent;
document.onmousesetup = mouseEvent;
*/