corrected IMAGE_PATH

[[Imported from SVN: r309]]

doc/doxygen/Doxyfile

@@ -433,9 +433,9 @@ EXAMPLE_RECURSIVE      = NO
 # directories that contain image that are included in the documentation (see 
 # the \image command).
 
-IMAGE_PATH             = ../grid/sgrid \
-                         ../grid/yaspgrid \
-			 ../grid/common/refinement
+IMAGE_PATH             = ../../grid/sgrid \
+                         ../../grid/yaspgrid \
+			 ../../grid/common/refinement
 
 # The INPUT_FILTER tag can be used to specify a program that doxygen should 
 # invoke to filter for each input file. Doxygen will invoke the filter program