The item immediately opens up so that you can examine the metadata of the item by clicking on the top ‘Metadata’ button to get a view of the various facets of the resource or examine the actual contents by clicking on the ‘Content’ button on top.
It may be a situation where you will be required to create an account and login with your user name and password to view the contents, as in the example below.
A third scenario could be when the source organization will expect you to pay certain fees to actually buy the book or have a view of it. You can still view the ‘Metadata’ of the item without any payment so as to understand the relevance of the book for your use, as is shown below.
In all the above three scenarios, a new window will open up to display the item details and you can simply close the window to continue with your normal browse/search operations in the original window.