I am going to have to link to an external website as I am having trouble reproducing this issue in JSFiddle.
For some reason accessing my page with an URL fragment corresponding to an ID that exists on the page appears to pull up certain areas of the document, the behaviour is not reproduced with a non-existant ID. There is no JavaScript on the page which could be causing this behaviour.
This behaviour is consistent in the following (so is unlikely to be a browser bug):
- Google Chrome 31
- Firefox 21
- Internet explorer 8
Live view (accessed: 19/12/13) Issue resolved - see graphic below:
- This is the page as it should look: http://sixplusfour.co.uk/encyclopedia/
- This is the page with the named anchor: http://sixplusfour.co.uk/encyclopedia/#pagelist
The error is shown side by side in the following image:

Does anyone know what could be causing this behaviour?