I learned from great tutorial of kirupa .
I tried to create own image gallery, now I stay in front of problem.
How can I generate path for my images and thumbnails for XML file.
E.g. I have 110 images paths and 110 thumbnails path.
Manually takes it lot of time 
, how can I make this code for XML file?
**
<pic>
<image>images/img/ref/img/img_001.jpg</image>
<thumbnail>images/img/ref/thm/img_001.jpg</thumbnail>
</pic>
**
next node, next node,
…
last node:
**
<pic>
<image>images/img/ref/img/img_110.jpg</image>
<thumbnail>images/img/ref/thm/img_110.jpg</thumbnail>
</pic>
**
