debugger

adi,

   > I wan't to know if it's a javascript debugger or ruby debugger
   > to get the errors.

For javascript, use Firefox + Firebug :
     http://getfirebug.com/js.html

For (visual) Rails debugging, you might give a try at Fyre
     http://gyre.bitscribe.net/

Alain Ravet

Adi

  > > For javascript, use Firefox + Firebug :
  > > http://getfirebug.com/js.html
  > Yes many thanks it's good, but the problem is that now i have problems
  > in ie. I have fix them in firefox and doesn't work in ie;))

For debugging javascript in IE you can use firebug lite :
   http://getfirebug.com/lite.html

This technique is illustrated in the peepcode #8 :
   http://peepcode.com/products/javascript-with-prototypejs

Alain Ravet