CapsLock 키 체크

<SCRIPT LANGUAGE="JavaScript"><!--
function checkCapsLock( e ) {
 var myKeyCode=0;
 var myShiftKey=false;
 var myMsg='CapsLock 키가 켜져있습니다. ';

 // Internet Explorer 4+
 if ( document.all ) {
  myKeyCode=e.keyCode;
  myShiftKey=e.shiftKey;

 // Netscape 4
 } else if ( document.layers ) {
  myKeyCode=e.which;
  myShiftKey=( myKeyCode == 16 ) ? true : false;

 // Netscape 6
 } else if ( document.getElementById ) {
  myKeyCode=e.which;
  myShiftKey=( myKeyCode == 16 ) ? true : false;

 }

 // Upper case letters are seen without depressing the Shift key, therefore Caps Lock is on
 if ( ( myKeyCode >= 65 && myKeyCode <= 90 ) && !myShiftKey ) {
  alert( myMsg );

 // Lower case letters are seen while depressing the Shift key, therefore Caps Lock is on
 } else if ( ( myKeyCode >= 97 && myKeyCode <= 122 ) && myShiftKey ) {
  alert( myMsg );

 }
}
//--></script>
<div align="center"><table width="100%" border=0 cellspacing=0 cellpadding=0>
<tr><td width="100%" align="center" valign="top">
<FORM><STRONG>Password:</STRONG>
<INPUT TYPE="Password" NAME="Password" SIZE=16 MAXLENGTH=16 onKeyPress="checkCapsLock( event )">
<P><INPUT TYPE="Reset"></FORM></center></div>