JavaScript (Computer program language) Web site development 50 Web sites 48 Design 47 Internet programming 43 HTML (Document markup language) 39 Ajax (Web site development technology) 29 XHTML (Document markup language) 18 Web servers 14 World Wide Web 14 Development 13 Application software 12 Cascading style sheets 12 Java (Computer program language) 12 XML (Document markup language) 10 Programming 8 Computer graphics 7 Computer programs 6 PHP (Computer program language) 6 Authoring programs 5 Asynchronous transfer mode 4 Computer animation 4 ECMAScript (Computer program language) 4 Flash (Computer file) 4 Object-oriented programming (Computer science) 4 Relational databases 4 Document Object Model (Web site development technology) 3 INFORMIX Dynamic server 3 Internet games 3 Plug-ins (Computer programs) 3