Review of "Portal of Texas History" Website

The Portal of Texas  History site: http://texashistory.unt.edu/ allows you to narrow your search to narrow your search by resource type, county and decade.  For a test name I entered Riddell.  You can narrow decade results by clicking on the more button for earlier decades.  I am interested in the Civil War Era.  A slider button allows you to adjust the size of your selected scanned item.  The image viewer allows you to view four pages in sequence.  You can get the results highlighted but it seems cumbersome to figure out how to do have the image viewer do this.