What to use for gluing carpets?

Hello, I was wondering what kind of adhesive would be appropriate and effective to connect these two pieces together. Attachment 43972 (http://www.doityourself.com/forum/attachments/rugs-carpets-carpeting/43972-what-use-gluing-carpets-photo-1.jpg) Attachment 43973 (http://www.doityourself.com/forum/attachments/rugs-carpets-carpeting/43973-what-use-gluing-carpets-photo-2.jpg) The back of the carpet pieces are sanded type if that helps. I don't mind it getting it on the floors because they're already hideous and damaged.