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at work I use the cms ezpublish, it using images in a very intelligent way. can do for XOOPS something similar.
in ezp all the images are stored in the MEDIA LIBRARY.
For every image you create multiple copies of different dimensions (the dimensions are taken from a list)
eg
thumb = 120x200
article = 200x300
full = 400x400
...
...
then the image will be created
so all the pictures on the site would be consistent.
certainly occupy more space but would be more practical.
What do you think?
sorry for bad english