end_html did not apeared at the end of html code.
Rearanged code... Modification done on end_html function on case "" eq "0" "" eq "1" "" eq "2" or default case if non correspond.
Rearanged code comment included...
Modification done on end_html function on case \"$F\" eq \"0\" \"$F\" eq \"1\" \"$F\" eq \"2\" or default case if none correspond.