Idiographica

Via aziesel on del.icio.us, I found the tool I was looking for:

Idiographica: a general-purpose web application to build idiograms on-demand for human, mouse and rat

Kin T and Ono Y, Bioinformatics 2007; doi:10.1093/bioinformatics/btm455

Idiographica a web server which serves as a general purpose idiogram rendering service, and allows users to generate high-quality idiograms with custom annotation according to their own genome-wide mapping/annotation data through an easy-to-use interface. The generated idiograms are suitable not only for visualizing summaries of genome-wide analysis but also for many types of presentation material including web pages, conference posters, oral presentations, etc.Idiographica is freely available at http://www.ncrna.org/idiographica/