Help with trailer body

[AboveAllDetailing]

On my trailer I am having difficulty removing these marks from the previous graphics as showed in the photos below.

http://i431.photobucket.com/albums/qq31/AboveAllDetailing/e13c3650.jpg

http://i431.photobucket.com/albums/qq31/AboveAllDetailing/27303d38.jpg

Any suggestions?

[loudog2]

Is that adhesive from the graphics? If it is Goof off works well.
Welcome to the Goof Off Website (http://www.goof-off.com/)

[AboveAllDetailing]

Thanks.
I'll get some tomorrow