Problems With firefox Using Java Script

[mihir]

HI,i am Using firefox Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US;
rv:1.8.0.3) Gecko/20060426 Firefox/1.5.0.3.

Whenever i use some script i javascript console shows

Error: uncaught exception: [Exception... "Component returned failure
code: 0x80570016 (NS_ERROR_XPC_GS_RETURNED_FAILURE)
[nsIJSCID.getService]" nsresult: "0x80570016
(NS_ERROR_XPC_GS_RETURNED_FAILURE)" location: "JS frame ::
chrome://browser/content/browser.js :: anonymous :: line 5347" data:
no]

and my script does not work properly then.

i use this script on textbox,after getting this error when i pressed
key ,nothing happened and textbox does not appear any character on it.

I think character is blocked.

I don't use any thene except from mozilla default,
only one extension java quick starter version 1.0.

in previous version of firefox my script works very fine.

I am so confused ,what this error message wants to say?How do i over
come it?

Thank You All
Mihr Parekh
+91 94266 21000