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Functionality of my pages with Opera browsers



The CSS-site like other sites or individual pages are rendered almost 100% as it is designed with Opera 6.01+ browsers both on screen presentation and printing (I give a list of reasons in the browser recommendation page).

Features, which I have used are such advanced features, which show that taking account all media types and groups[S] the newest Opera has the widest CSS2 implementation. Of course Opera doesn't support all, which is supported in some other new browser. As an example of such features are some dynamic changes.

In general Opera renders Web-sites quite well. If sites are designed according to the widely used existing recommended specifications (like HTML 4.01 and CSS2) and they look out weird in Opera, the reason is in most cases in the authors. Web-sites are rendered in Opera incorrect commonly because of following reasons:

  1. The site use non-standard (proprietary) encoding (for example non-standard DHTML).
  2. The site has very bad encoding, which has much errors.
  3. The site uses some unidentified plug-ins application(s).

In these conditions Opera might render sites weird, links don't work or the browser crashes (Opera however extremely seldom crash the whole operating system; Reopening the browser it is possible to go to the situation before the error happened and copy the problematic link to use it in another browser). In my mind these errors are depending more bad designing than errors in the browser (read a cite[S]). Opera is also a little bit sensitive to server problems. Because it tries to render pages as fast as possible, it doesn't wait in bad connections so much as MS IE, which might crash Opera.

Opera Software: Press FAQ.

I use have used Opera because of the following reasons:

  1. It has zoom, which is extremely important for older people, who don't have anymore so good sight as young people. In the most used browsers it is not possible to change the size of fixed defined font from quich menus. In order to change text sizes in MS IE for Windows browsers preferences of the browsers might need to change radical way. These changes should be done by diifficult ways and they must be repeated often. These difficult changes wouldn't however help if some texts would be small images.
  2. I has versatile window manager:
    • It has MDI interface (Multi Document Interface) with has for example the tile function (I use commonly two or three horizontally tiled windows).
    • Opened windows can be save in session files (the browser saves in them all properties of windows, for example the zooming factors and positions). When Opera has been opened next time with one selection it is possible to open as many windows as the user needs. In newest browsers opening several windows at the same time opens several user interfaces.
  3. It is as default in the interface buttons for following functions (they are faster to use than in MS IE, which the user has not changed with the development kit):
    • Toggle whether images should be loaded/shown.
    • Toggle between document mode and user mode. With this button it is fast to put on and take off user style sheets[S] (I use commonly a CSS-file, which you can download to yourself[S]).
    • Preview document as it will appear printed/ normal view.
  4. A drop-down menu in the interface for almost twenty search-engines (the first in the list is Google).
  5. Marking text and clicking the right button of the mouse the user gets a menu, which has for example the possibility to send the marked text to a search engine.
  6. Opera has good possibilities to tailor browsers. By editing ini-files it is possible to create new menu and keyboard shortcuts (menu.ini ja keyboard.ini). For adding new searh engines has been made a special application, Opera Search.ini Editor.
    mini strona Opera PL: Opera Search.ini Editor.

I admit however that also MS IE has handy features (it is possible to install into MS IE a powerful search engine).

Browser specific hints

Opera Software:
What's new in Opera 5.10, XML in Opera.

Known problems

Opera browser don't have many such missing features, which limit Web-designing, but I found following two features, which have caused for me limitations:

Browsers have also following minor CSS-problems:

In addition I have found following are other functionality problems (Opera 5.12 has the most less generic functionality problems):