检测大写键

functioncheckCapsLock(event)

{

    var e = event||window.event;

    var o = e.target||e.srcElement;

    var notice =document.getElementById("capsNotice");

    var keyCode = e.keyCode || e.which;

    var isShift = e.shiftKey || (keyCode == 16)|| false;

    if(((keyCode>=65 && keyCode<=90) && !isShift)

      ||(keyCode>=97 && keyCode<=122) && isShift))

      {

          notice.style.display = "";

      }

    else

    {

       notice.style.display="none"

    }

}