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Dynamic web pagesThe stats at The Counter give a rough idea of percentages online using different browsers. These days most people use IE or Firefox and there are less than 1% using Netscape. However the following gives you information about Netscape which used to be important for web designers.
Support for dynamic HTML (DHTML).
Limited support for Cascading Style Sheets Level 1 (CSS1)
Inline support for PNG graphics.
Integrated Macromedia Flash plug-in.
Support for Layers.
Support for XML and XUL,
Full support for Cascading Style Sheets Level 1 (CSS1)
Supports the W3C DOM (Level 1)
Support for JavaScript 1.5
Netscape 4.7 did not support them as fully as IE 5.x. Netscape 4.7 basically took the inheritance a step too far. Netscape 6.0 however had much better support for stylesheets and adheres much more closely to the web standards.
The best way to find out what goes and what doesn't is by trial and error, however there are a couple of resources which will help you a long way with understanding more about stylesheets - click here
Follow this link for information on other browser compatability.