|Microsoft™ Internet Explorer™:||IE|
Das kann im Wesentlichen drei Gründe haben:
Kommt eher bei älteren Browsern vor. Ein Update auf eine neuere Version löst das Problem normalerweise.
Warum das manchmal so gemacht wird, kann ich offengestanden nicht sicher sagen. Ich vermute hier eine betriebswirtschaftliche Strategie mancher Firmen, die ihre eigenen, von allgemeinen, offenen Standards abweichende Vorgaben definieren, um sich Wettbewerbsvorteile zu sichern. Das Problem ist, das es keine allgemein bindenden Standards gibt, jedoch folgen viele Web-Browser, wie zB. Firefox oder Opera, den Empfehlungen des W3C.
Nur hat die Sache eben zwei Seiten. Für mich als freien Programmierer reicht es im Allgemeinen, eine Seite so zu gestalten, daß sie von den meisten, insbesondere den W3C-konformen Browsern verstanden wird. Wollte man ein Programm erstellen, das Allem und Jedem gerecht wird, ist man irgendwann hautpsächlich mit "Schmetterlinge jagen" beschäftigt. Und nicht mehr damit, wie ursprünglich geplant, etwas Produktives zu tun. So zumindest meine Erfahrung.
Zusätzlich bei Linux:
Die Seite "Lagerfristen von Paketen und Einschreiben" entstammt ursprünglich einer C/C++ Konsolenapplikation, die ich unter Linux geschrieben hatte. Sie sollte Jahreskalender für Fristen bei der Post erstellen. Nun stellte sich die Frage, wie ich das Programm meinen damaligen Kollegen von der Post zukommen lassen könnte, die im Allgemeinen keinen Rechner unter Linux laufen haben. Eine Möglichkeit wäre gewesen, das Programm nach Windows™ zu portieren. Das wollte ich aber aus verschiedenen Gründen nicht. Erstens wäre es umständlich gewesen. Zweitens, hätte ich eine Oberfläche dazu erstellt, was ja durchaus wünschenswert sein könnte, wäre es mit der Portierbarkeit schnell vorbei. Als Alternative bot sich zwar auch die Portierung nach Java™ an, allerdings muß der Anwender dann auch Java™ auf seinem Rechner installiert haben.
Das ist das Logo von dem W3C World Wide Web Consortium. Unter anderem werden hier Standards und Empfehlungen für HTML und DOM (Document Object Model, die programmatische Entsprechung einer Webseite im Browser) herausgegeben. Die Seite, die Sie gerade lesen, entstpricht zB. dem W3C Standard für "HTML 4.01 Transitional".
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Version 3, 29 June 2007
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If you develop a new program, and you want it to be of the greatest possible use to the public, the best way to achieve this is to make it free software which everyone can redistribute and change under these terms.
To do so, attach the following notices to the program. It is safest to attach them to the start of each source file to most effectively state the exclusion of warranty; and each file should have at least the “copyright” line and a pointer to where the full notice is found.
<one line to give the program's name and a brief idea of what it does.> Copyright (C) <year> <name of author> This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see <http://www.gnu.org/licenses/>.
Also add information on how to contact you by electronic and paper mail.
If the program does terminal interaction, make it output a short notice like this when it starts in an interactive mode:
<program> Copyright (C) <year> <name of author> This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. This is free software, and you are welcome to redistribute it under certain conditions; type `show c' for details.
The hypothetical commands `show w' and `show c' should show the appropriate parts of the General Public License. Of course, your program's commands might be different; for a GUI interface, you would use an “about box”.
You should also get your employer (if you work as a programmer) or school, if any, to sign a “copyright disclaimer” for the program, if necessary. For more information on this, and how to apply and follow the GNU GPL, see <http://www.gnu.org/licenses/>.
The GNU General Public License does not permit incorporating your program into proprietary programs. If your program is a subroutine library, you may consider it more useful to permit linking proprietary applications with the library. If this is what you want to do, use the GNU Lesser General Public License instead of this License. But first, please read <http://www.gnu.org/philosophy/why-not-lgpl.html>.