A: 

Sounds like you got the correct settings. Are you sure these aren't alerts actually in the code.

AnthonyWJones
Yes, pretty sure.... I will add 2 images to the question, before and after the changes in configuration
Sergio
+2  A: 

If you want to turn them off in code, you can do this:

window.onerror = null;
Greg
Doesn't woork for this case, but good advice ;) Thanks +1
Sergio
Mmm I've never seen that error before - I'm not 100% convinced it's coming from your javascript, unless you're doing something "interesting" - ActiveX or something...
Greg
Only javascript at these pages...
Sergio
+1  A: 

It seems like you don't have "enough storage". Maybe you can try upping your cache size. That's just a shot in the dark, but worth a try...

geowa4
It was a nice try :) I just tried that... with no luck... +1 for the effort.
Sergio
A: 

If you don't want to hide all other errors wrap the call to the code in a try/catch.

try {
    callDodgyCode();
}
catch(e) {
    // Eat error
}
slashnick
Thanks, but i did said above: "I don't have access to the code, I am just inserting data, the application is still being built and the javascript is generated from codebehind. There is absolutely nothing I can do to remove this errors."
Sergio
+1  A: 

After some Googling it seems you might get this if your user-agent string is too long. See here and here. I'm not convinced this will fix it but it might be worth a try.

slashnick
The second link did the job :) Thanks :D +1 and accepted answer
Sergio