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jsf 1.2 and richfaces 3 - get screen dimensions and browser info

here's how to get common browsing details like screen height and width, which browser the user is using and what language the browser has, using jsf 1.2 and richfaces 3:

<a4j:commandButton value="#{myBean.getPropertyValue('label.login')}"
<a4j:actionparam name="w" value="screen.width"
assignTo="#{myBean.screenWidth}" noEscape="true" />
<a4j:actionparam name="h" value="screen.height"
assignTo="#{myBean.screenHeight}" noEscape="true" />
<a4j:actionparam name="c" value="navigator.cookieEnabled"
assignTo="#{myBean.cookieEnabled}" noEscape="true" />
<a4j:actionparam name="a" value="navigator.userAgent"
assignTo="#{myBean.userAgent}" noEscape="true" />
<a4j:actionparam name="l" value="navigator.language"
assignTo="#{myBean.browserLanguage}" noEscape="true" />
<a4j:actionparam name="p" value="navigator.platform"
assignTo="#{myBean.platform}" noEscape="true" />

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