multi-image upload addition to cms (php/mysql)

Goals is a script that can be used (standalone & non dependant) within an existing cms Used for upload & display of multiple images (code php/mysql & ajax?) To extend an excisting cms with image upload & display capabilities without making big changes to the website(s) and /or cms itself. eg like a plugin. Back-end: -selection and upload of multiple images(jpg) at the same time (shit/ctr select multiple) -rescaling of those images in 3 different formats tumb, small & big (exact size determined in a (php) config file (posible to upload big image files & error handling ) -standalone script but usable within a existing cms / pluginlike -entry in mysqldb & (re)naming files by id db number /spec to determine the page / catagory the image belongs to (if needed) -easy implementation (only a few includes & variables) in cms & website -needs to be possible to replace images / adding (multiple) images /deleting images in an easy way -support for the common brouwsers (IE / firefox / etc) Front end: -possible to include an image (htmlcode) with a shortcode -within the shortcode I can also add size/description & (predefined) display code tags -within the shorcode I can also include a modification size tag wich will make a new image on the server with these sizes & adjust the shortcode for display. more information examples will follow if needed upon acceptance if needed