I need someone to design a Facebook app for me so that I can embed an "online ordering" button for me on my facebook page which will take me to an online ordering site. I need to be able to change the URL link so that for different pages I can provide a different link to online ordering. i.e. on my clothes page I can provide a link (embedded in an image not just as a link) to a clothes ordering website whereas on my camera page I can provide a link to a camera ordering website.
In summary I want an "online ordering" image which I can change the embedded URL according to which page it is on.