If you're using Internet Explorer and you're having trouble viewing the different catalogue layers on the main catalogue page you need to unblock this as Internet Explorer has blocked the browser from viewing the different catalogue layers.

You can do this by locating the control underneath the address bar on you browser and single clicking over it. The control should look like the one below.

After clicking on the control select "Allow Blocked Content..." and then click "Yes" when the message box pops up. You will now be able to select the different catalogue layers.

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