[NTG-context] automatically splitting big images (calculation problem)

Ahoi, I got some long images that I’d like to split over several pages. \def\clipfigure{\dodoubleempty\doClipFigure} \def\doClipFigure[#1][#2]{ \dorecurse{#1}{% \clip[ height=\textheight, voffset=\dimexpr((\recurselevel -1) * \textheight) ]{\externalfigure[#2][width=\textwidth]}\par } } \clipfigure[3][verylongimage] But "\dimexpr((\recurselevel -1) * \textheight)" for the vertical offset is wrong. How can I do this calculation? Greetlings, Hraban --- http://www.fiee.net http://wiki.contextgarden.net GPG Key ID 1C9B22FD