Few days ago Vijay asked if there’s a way to disable ctrl + n combination (open the new window shortcut. So I set out to create a small Java Script that disables any ctrl + key combination (e.g. ctrl + v, ctrl + c, ctrl + a, etc.).
Script is a bit more complicated than Disable form submit on enter keypress and it should work in both Fire Fox and Internet Explorer.
And you just add this to the field where you’d like to disable keys:
<input type="text" name="mytext" onKeyPress="return disableCtrlKeyCombination(event);" onKeyDown="return disableCtrlKeyCombination(event);" />
Although the key combinations are disabled only on one field the same script can be easily modified to disable ctrl + key combinations on whole page.
Also if you are looking for something more sophisticated and with more features you might want to take a look at a visitor comment that contains DisableKeys.js script that gives you more control and you can disable almost any key and/or key combination, including ctrl + key and alt + key.