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In Netscape Navigator 4 and Internet Explorer 4 its possible to trap key presses. The following *little* example demonstrates Shift or Ctrl key combinations. Most of the Ctrl keys are already reserved. The Shift keys maybe no use as it traps people entering upper case characters:
<HTML>
<HEAD>
<SCRIPT LANGUAGE="JavaScript1.2"><!--
function netscapeKeyPress(e) {
if (e.modifiers == 2) {
// a - Select all
// b - Edit bookmarks
// c - Copy
// d - Add bookmark
if (e.which == 5 ) alert('Ctrl and e pressed');
// f - Find in page
// g - Find Again
// h - Open History
// i - Page Info
if (e.which == 10) alert('Ctrl and j pressed');
if (e.which == 11) alert('Ctrl and k pressed');
if (e.which == 12) alert('Ctrl and l pressed');
// m - New Message
// n - New Navigator Window
// o - Open Page
// p - Print
// q - Exit
// r - Reload
// s - Save As
if (e.which == 20) alert('Ctrl and t pressed');
// u - Page source
// v - Paste
// w - Close
// x - Cut
if (e.which == 25) alert('Ctrl and y pressed');
// ?
}
else if (e.modifiers == 4) {
if (e.which == 65) alert('Shift and A pressed');
if (e.which == 66) alert('Shift and B pressed');
if (e.which == 67) alert('Shift and C pressed');
if (e.which == 68) alert('Shift and D pressed');
if (e.which == 69) alert('Shift and E pressed');
if (e.which == 70) alert('Shift and F pressed');
if (e.which == 71) alert('Shift and G pressed');
if (e.which == 72) alert('Shift and H pressed');
if (e.which == 73) alert('Shift and I pressed');
if (e.which == 74) alert('Shift and J pressed');
if (e.which == 75) alert('Shift and K pressed');
if (e.which == 76) alert('Shift and L pressed');
if (e.which == 77) alert('Shift and M pressed');
if (e.which == 78) alert('Shift and N pressed');
if (e.which == 79) alert('Shift and O pressed');
if (e.which == 80) alert('Shift and P pressed');
if (e.which == 81) alert('Shift and Q pressed');
if (e.which == 82) alert('Shift and R pressed');
if (e.which == 83) alert('Shift and S pressed');
if (e.which == 84) alert('Shift and T pressed');
if (e.which == 85) alert('Shift and U pressed');
if (e.which == 86) alert('Shift and V pressed');
if (e.which == 87) alert('Shift and W pressed');
if (e.which == 88) alert('Shift and X pressed');
if (e.which == 89) alert('Shift and Y pressed');
if (e.which == 90) alert('Shift and Z pressed');
}
}
function microsoftKeyPress() {
if (window.event.ctrlKey) {
// a - Select All
// b -Organise Favourites
// c - Copy
// d -Add to Favourites
if (window.event.keyCode == 5 ) alert('Ctrl and e pressed');
// f -Find (on this page)
if (window.event.keyCode == 7 ) alert('Ctrl and g pressed');
if (window.event.keyCode == 8 ) alert('Ctrl and h pressed');
if (window.event.keyCode == 9 ) alert('Ctrl and i pressed');
if (window.event.keyCode == 10) alert('Ctrl and j pressed');
if (window.event.keyCode == 11) alert('Ctrl and k pressed');
// l - Open
if (window.event.keyCode == 13) alert('Ctrl and m pressed');
// n - New Window
// o - Open
// p - Print
if (window.event.keyCode == 17) alert('Ctrl and q pressed');
// r - Reload
// s - Save
if (window.event.keyCode == 20) alert('Ctrl and t pressed');
if (window.event.keyCode == 21) alert('Ctrl and u pressed');
// v - Paste
// w - Close
// x -Cut
if (window.event.keyCode == 25) alert('Ctrl and y pressed');
if (window.event.keyCode == 26) alert('Ctrl and z pressed');
}
else if (window.event.shiftKey) {
if (window.event.keyCode == 65) alert('Shift and A pressed');
if (window.event.keyCode == 66) alert('Shift and B pressed');
if (window.event.keyCode == 67) alert('Shift and C pressed');
if (window.event.keyCode == 68) alert('Shift and D pressed');
if (window.event.keyCode == 69) alert('Shift and E pressed');
if (window.event.keyCode == 70) alert('Shift and F pressed');
if (window.event.keyCode == 71) alert('Shift and G pressed');
if (window.event.keyCode == 72) alert('Shift and H pressed');
if (window.event.keyCode == 73) alert('Shift and I pressed');
if (window.event.keyCode == 74) alert('Shift and J pressed');
if (window.event.keyCode == 75) alert('Shift and K pressed');
if (window.event.keyCode == 76) alert('Shift and L pressed');
if (window.event.keyCode == 77) alert('Shift and M pressed');
if (window.event.keyCode == 78) alert('Shift and N pressed');
if (window.event.keyCode == 79) alert('Shift and O pressed');
if (window.event.keyCode == 80) alert('Shift and P pressed');
if (window.event.keyCode == 81) alert('Shift and Q pressed');
if (window.event.keyCode == 82) alert('Shift and R pressed');
if (window.event.keyCode == 83) alert('Shift and S pressed');
if (window.event.keyCode == 84) alert('Shift and T pressed');
if (window.event.keyCode == 85) alert('Shift and U pressed');
if (window.event.keyCode == 86) alert('Shift and V pressed');
if (window.event.keyCode == 87) alert('Shift and W pressed');
if (window.event.keyCode == 88) alert('Shift and X pressed');
if (window.event.keyCode == 89) alert('Shift and Y pressed');
if (window.event.keyCode == 90) alert('Shift and Z pressed');
}
}
if (navigator.appName == 'Netscape') {
window.captureEvents(Event.KEYPRESS);
window.onKeyPress = netscapeKeyPress;
}
//--></SCRIPT>
</HEAD>
<BODY onKeyPress="microsoftKeyPress()">
</BODY>
</HTML>