"I don't know how I can execute an event of Javascript into a link in a program in Perl. This event of JavaScript have executed a function that return a HTML page. Anybody know how I can it? Is it possible do it this?: $datos=$datos.""<a href='"" . $me . ""?C=OFERTAS2&EMPRESA="".$empresa_param.""&NREF="".$nref.""' onMouseOver=""linkFTecnica(nref2)"">""; What is bad in this code? Thank you very much. "