Disable F5 and BackSpace on Mozilla Firefox

[Eli]

Hi,

Since using IFRAMEs in my page, I want to disable the F5 and BackSpace
keys. I got this working on IE but not on Mozilla Firefox:
function CheckKey(evt)
{
evt=(evt)?evt:window.event;
switch (evt.keyCode)
{
case 8: //backspace
case 116: //F5
evt.cancelBubble=true;
evt.returnValue=false;
return false;
}
return true;
}

document.onkeydown=CheckKey;
document.onkeyup=CheckKey;
Does anyone knows how to make this work on Mozilla Firefox?

-thanks, Eli

[Eli]

Sorry.. forgot the most important line that makes it work under IE:

evt.keyCode=0;

But this line makes an error under Mozilla Firefox (trying to set a
value that has only a getter).

What is the right way to make it work under Mozilla Firefox?

[Randy Webb]

Eli wrote:

Hi,

Since using IFRAMEs in my page, I want to disable the F5 and BackSpace
keys.
Why? You are correcting the wrong problem.

I got this working on IE but not on Mozilla Firefox:

Depends upon your definition of "working".

--
Randy
comp.lang.javascript FAQ - http://jibbering.com/faq & newsgroup weekly