changes on php/mysql search script and pdf to thumbnail

[login to view URL] to select all/ desellect all seselect all checkboxes. select all is default. 2. Default order of results by should be by date. [login to view URL] by date should sort first by year,month,day. each year,month,day is a separate field in the db. 4. title column width should be twice as wide. 5. source column should be before thumbnail, date column should be after title column. 6. Thumbnail should magnify when hover taking image from ./large_images directory. 7. Colors of rows should be the similar to the [login to view URL] attached. 8. using [login to view URL] create a php script or modify existing python script which will run daily on cron and check which files exists in ./thumbnails and compare to ./files which holds pdf. naming is [login to view URL] and for thumbnail is identification_code.png. If thumbnails exists for pdf then don't create thumbnail. If it does not exists then create a thumbnail and a larger image in ./large_images named identification_code.jpg.