Bear in mind that the ftp'd image filename can carry the datetime information -
typical filename: Cam1_2013051109150701.jpg
Although it would be nice if Dlink added separators in the firmware, we suggested this long ago ...
This javascript snippet acts on the filename:
txt= filename.substring(0,9)+\"-\"+filename.substring(9,13)+\"-\"+filename.substring(13,17)+\"-\"+filename.substring(17,21) ;
The result is better: Cam1_2013-0511-0915-0701.jpg
Could get a bit fancier:
txt= filename.substring(0,9)+\"-\"+filename.substring(9,11)+\"/\"+filename.substring(11,13)+\"-\"+filename.substring(13,15)+\":\"+filename.substring(15,17)+\"-\"+filename.substring(17,21) ;
The result is then: Cam1_2013-05/11-09:15-0701.jpg ( I have not tested this second one!)