Attached Link: http://www.adobe.com/support/techdocs/1e946.htm

I dont know of a shortcut key,but if you want to apply the SAME action to a number of similar documents, you can use batch processing and let the computer do the laborious repetitive work. Put all the documents in one folder & then create another folder to recieve the processed images.Go to file-automate-batch.The resultant pop-up menu is pretty self explanitory,select the folder with the documents,specify the action,then select the target folder,and click O.K. That,s about all there is to it. There is a fuller explanation including some more complex variations at the attached link.