CALLING A IMAGE FROM A LOCATION OF SERVER

Hello to all,i have 2 doubts:
1ª) try to do this by creating a dummy image and then i format picture and put url{var} where var is in xml element and contains the path of the picture but doesnt work. i'm doing something wrong?
2º) sometimes i want to call an image without the dummy because i'm limited to the size of the dummy image and if i have pictures in vertical and other in horizontal the aspect isnt quite good. i have a xsl command that i can call an image from a location (contained in a xml element )and resize it at runtime?
Thank's in advance

For 1a) what is the code that you are using? Have you followed the process like this blog post: http://blogs.oracle.com/xmlpublisher/2006/05/dynamic_images.html
Thanks!

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