getting the last url visited

[Une Bévue]

i do have a page saying :

index.html

where the user could setup a color afterwards the urls becomes :

index.html?color=maroon

for example.

obviously, in this page i have a menu linked to :

another_page.html

and i'de like, after the user entered in "another_page.html" to retrieve
:

?color=maroon

i have tested history however Firefox 2 says :

uncaught exception: Permission denied calling the method History.item

the same for history.previous

does a workaround exists ?

 

[Une Bévue]

?color=maroon

after i understood referrer takes TWO r, i get it using
document.referrer

;-)