Perquisites:
1. Installation of Liquid UI WebServer.
2. Configure Liquid UI WebServer to connect to SAP R/3.
3. Browser Client to display Login screen for SAP R/3.
Steps to select a different theme for Liquid UI Web Server:
Step 1: Execute RunGuiXT4Web.bat file in WebServer Installed folder, to start Liquid UI WebServer.
Step 2: Connect on the browser to the SAP R/3 specified in Config.js
eg:http://<WebServer>:<portnumber>/guixt4web/logon.gsp
Step 3: Login screen appears on the browser with current skin (Theme).
Step 4: Open Config.js file, in WebServer installed folder.
C:\Program Files\Synactive Inc\Webserver (or)
C:\Program Files (x86)\Synactive Inc\Webserver --> 32Bit WebServer on 64Bit O.S Machine
Step 5: Current Theme (Style Key) is specified in const DEFAULT_STYLE_KEY = 'f35'; statement.
Step 6: Few other Style keys are provided, in Config.js under,
const STYLE_CONFIG = {"classic":"classic","2010":"2010","liquid":"liquid","f35":"f35","ui5":"ui5"} array to choose.
Step 7: Change const DEFAULT_STYLE_KEY = 'f35'; statement to const DEFAULT_STYLE_KEY = 'ui5';.
(Other Style Keys can also be used...'classic','2010' and 'liquid').
Step 8: Re-Start RunGuiXT4Web.bat file.
Step 9: Connect on the browser to the SAP R/3.
Step10: The Browser Skin (Theme) would be changed.
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see the attachment for more details