Hello, could any one direct me to the code that I may use to create a pop-up boxes or windows with pdflatex? Greetings, Marcelo Videa Dr. Marcelo Videa Vargas Director de la carrera de Licenciado en Ciencias Químicas ITESM Campus Monterrey tel. (52) 81 83284489 fax. 81 83581400 ext. 4511 lcq.mty at itesm.mx http://lcq.mty.itesm.mx/