Product Entry Page is not opening.

HI,

I am not able to open my product add page on the website i am using 1.9, while if i am trying to access the same from my local machine, it works.

is there anybody let me know that what can be the solution for this ?

Thanks in Advance

Error I am getting is as below

Webpage error details

User Agent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 5.1; Trident/4.0; InfoPath.2; .NET4.0C; .NET4.0E; .NET CLR 2.0.50727; .NET CLR 3.0.4506.2152; .NET CLR 3.5.30729)
Timestamp: Fri, 24 Jun 2011 13:35:33 UTC


Message: 'Sys' is undefined
Line: 3
Char: 347
Code: 0
URI: http://www.yourdomain.com/administration/ProductAdd.aspx?_TSM_HiddenField_=ctl00_sm1_HiddenField&_TSM_CombinedScripts_=%3b%3bAjaxControlToolkit%2c+Version%3d4.1.40412.0%2c+Culture%3dneutral%2c+PublicKeyToken%3d28f01b0e84b6d53e%3aen-US%3aacfc7575-cdee-46af-964f-5d85d9cdcf92%3ade1feab2%3af9cec9bc%3aa0b0f951%3aa67c2700%3af2c8e708%3a720a52bf%3a589eaa30%3a698129cf%3ae148b24b%3a8ad18101%3afcf0e993%3afb9b4c57%3accb96cf9


Message: 'Sys' is undefined
Line: 65
Char: 1
Code: 0
URI: http://www.yourdomain.com/administration/ProductAdd.aspx


Message: 'Sys' is undefined
Line: 2361
Char: 110
Code: 0
URI: http://www.yourdomain.com/administration/ProductAdd.aspx



I am getting this error while loading product page.

I am using Internet Explorer version 8 / also checked with google chrome and mozilla.

i also tried to publish once again on the server, but there is no change.