Unspecified error on Google Maps

Hello,

When the map loads I am getting the following error.

The error is in the original, unmodified OpenLayers.js file on this line:

Return!! (document. namespaces);

I have tried rewriting it to:

Return (typeof (document. namespaces) != 'undefined');

And it worked but then I get same "unspecified" errors on further referrals to document.namespaces:

If (! document.namespaces.olv){document.namespaces.add("olv",this.xmlns); …

I tried rewriting this to:

If (typeof (document. Namespaces. olv) == 'undefined') { …

But I get the same "unspecified error".

This error occurred on Internet Explorer 7, but not in Firefox.

Give me your suggestions on this.

Thank you.