ul#listado_de_materias{ margin: 6px auto 0 auto; font-family:  "MS Sans Serif", Geneva, sans-serif;color: #575353; font-size: 0.9em; width:85%; padding: 0; }
ul#listado_de_materias li.tittle{ cursor: pointer;	width:90%; font-family:  "MS Sans Serif", Geneva, sans-serif; color: #575353; padding: 4px 5px 4px 40px; font-size: 1em; margin: 1px 0 0 0; border: 1px solid #DFDFDF; border-collapse: collapse; background-color: #F3F3F3; list-style: none; background-image: url(vi1.gif); background-position: 2% center; background-repeat: no-repeat;}
ul#listado_de_materias li.tittle:hover{ cursor: pointer;	width:90%; font-family:  "MS Sans Serif", Geneva, sans-serif; color: #625D5D; padding: 4px 5px 4px 40px; font-size: 1em; margin: 1px 0 0 0; border: 1px solid Silver; border-collapse: collapse; background-color: #EDEDED; list-style: none; background-image: url(vi1.gif); background-position: 2% center; background-repeat: no-repeat;}
ul#listado_de_materias li{background-image: none; margin: 0; padding:0; }
ul#listado_de_materias li li{	padding: 2px 0 2px 25px; margin: 0; width:100%; list-style: none;  background-image: url(vi2.gif); background-position: 0% 8px; background-repeat: no-repeat; }
ul#listado_de_materias li li.titulo{	  list-style: none;  background-image: none; padding: 0 0 0 0; margin: 10px 0 2px 0px; }
ul#listado_de_materias li ul{margin: 2% 0 2% 5%;  width:100%; padding: 0;    }