Here we go.. First of all we will how we can call this Browser Function:

The calling is quite simple...

  <cf_getBrowser />

  <cfif browser.is_opera>

  <cfinclude template="opera.cfm">

  <cfelseif browser.is_mozilla>

  <cfinclude template="mozilla.cfm">

  <cfelseif browser.is_safari>

  <cfinclude template="safari.cfm"> 

  <cfelseif browser.is_ie>

  <cfinclude template="ie.cfm">

  </cfif> 

  <cfoutput>

  You are using: #browser.name#, version #browser.version# 

  </cfoutput>

  <cfdump var="#browser#" /> 

The above will display the contents related to the specific Browser. You can use the contents of CSS in these include files. If you are unable how we can include CSS in CFM file, see my Themeing Tutorial that is very to follow.

So after now the meat of the Application. Credit goes to original Author here, i Just edited it a bit that's All.

  <cfparam name = "version" default = "0">

  <cfparam name="attributes.useragent" default="">

  <cfif attributes.useragent is "">

  <cfset userAgent=cgi.HTTP_USER_AGENT>

  <cfelse>

  <cfset userAgent=attributes.useragent>

  </cfif>

  <cfset browser=StructNew()>

  <!--- Initiating struct --->

  <cfset browser.name="Unknown">

  <cfset browser.version=0>

  <cfset browser.is_ie=false>

  <cfset browser.is_opera=false>

  <cfset browser.is_webtv=false>

  <cfset browser.is_lynx=false>

  <cfset browser.is_links=false>

  <cfset browser.is_konqueror=false>

  <cfset browser.is_gecko=false>

  <cfset browser.is_safari=false>

  <cfset browser.is_mozilla=false>

  <cfset browser.is_netscape=false>

<cfif userAgent neq "">

  <cfset browser.is_ie=iif(findnocase("MSIE", userAgent,1) is 0, de("false"), de("true"))>

  <cfset browser.is_opera=iif(findnocase("Opera", userAgent,1) is 0, de("false"), de("true"))>

  <cfset browser.is_webtv=iif(findnocase("webtv", userAgent,1) is 0, de("false"), de("true"))>

  <cfset browser.is_lynx=iif(findnocase("Lynx", userAgent,1) is 0, de("false"), de("true"))>

  <cfset browser.is_links=iif(findnocase("Links", userAgent,1) is 0, de("false"), de("true"))>

  <cfset browser.is_konqueror=iif(findnocase("Konqueror",userAgent,1) is 0, de("false"), de("true"))>

  <cfset browser.is_gecko=iif(findnocase("gecko", userAgent,1) is 0, de("false"), de("true"))>

  <cfset browser.is_safari=iif(findnocase("Safari", userAgent,1) is 0, de("false"), de("true"))>

  <cfset browser.is_mozilla=false>

  <cfset browser.is_netscape=iif(findnocase("Mozilla", userAgent,1) is 0, de("false"), de("true"))>

  <!--- Detect Opera Netscape (Mozilla) spoofing, rule out Mozilla compatibles and spoofers --->

  <cfif browser.is_opera or browser.is_safari or (findnocase("compatible", userAgent,1) gt 0 or findnocase("spoofer", userAgent,1) gt 0)>

  <cfset browser.is_netscape=false>

  </cfif>

  <!--- Detect Opera IE spoofing --->

  <cfif browser.is_ie and browser.is_opera>

  <cfset browser.is_ie=false>

  </cfif>

  <!--- IE --->

  <cfif browser.is_ie is TRUE>

  <cfset browser.name = "Internet Explorer">

  <cfset browser.version = val(mid(userAgent,findnocase("MSIE", userAgent,1)+4,4))>

  <!--- Opera --->

  <cfelseif browser.is_opera is TRUE>

  <cfset browser.name = "Opera">

  <cfset browser.version = val(mid(userAgent,findnocase("Opera", userAgent,1)+6,4))>

  <!--- Mac OSX Safari --->

  <cfelseif browser.is_safari>

  <cfset browser.name = "Safari">

  <cfset browser.version= val(mid(userAgent,find("Safari/",userAgent) + 7, 2))>

  <cfset browser.is_gecko=false>

  <!--- Netscape, Mozilla and Mozilla based browsers --->

  <cfelseif browser.is_netscape is true>

  <cfif browser.is_gecko>

  <!--- Nestcape >= 6.X (gecko based) --->

  <cfset nav6_pos=findnocase("Netscape", userAgent,1)>

  <cfif nav6_pos gt 0>

  <cfset startpos=nav6_pos+10>

  <cfset browser.version=val(mid(userAgent,startpos,4))>

  <cfset browser.name = "Netscape">

  <cfset browser.version = version>

  <cfelse>

  <cfset browser.is_netscape=false>

  <cfset browser.is_mozilla=true>

  <!--- Mozilla < 1.1 --->

  <cfset browser.version=val(mid(userAgent,findnocase(")",userAgent,1)-5,5))>

  <!--- Mozilla (> 1.1) --->

  <cfif browser.version is 0>

  <cfset parantes = structnew()>

  <cfset parantes.start = find("(",userAgent)>

  <cfset parantes.slutt = find(")",userAgent)>

  <cfif (parantes.start gt 0) and (parantes.slutt gt parantes.start)>

  <cfset browser.version = val(RemoveChars(listlast(mid(user_agent,parantes.start,parantes.slutt - parantes.start), ";"),1,4))>

  </cfif>

  </cfif>

  <cfif Find("Firebird",userAgent) gt 0 or Find("Phoenix", userAgent) gt 0>

  <cfset browser.name = "Mozilla Firebird">

  <cfelseif Find("Camino", userAgent) gt 0 or Find("Chimera", userAgent) gt 0>

  <cfset browser.name = "Camino">

  <cfelse>

  <cfset browser.name = "Mozilla">

  </cfif>

  <cfset browser.geckobuild = val(mid(userAgent,find("Gecko",userAgent) + 6, 8))>

  </cfif>

  <cfelse>

  <!--- Netscape <= 4.x --->

  <cfset versjon=Val(mid(userAgent,9,4))>

  </cfif>
 <cfelseif browser.is_lynx>

  <cfset browser.name = "Lynx">

  <cfset browser.version=Val(mid(userAgent,FindNoCase("Lynx",userAgent) + 5,6))>
 <cfelseif browser.is_links>

  <cfset browser.name = "Links">

  <cfset browser.version=Val(mid(userAgent,9,4))>
 <cfelseif browser.is_konqueror>

  <cfset browser.name = "Konqueror">

  <cfset browser.version=Val(mid(userAgent,FindNoCase("Konqueror",userAgent)+10,6))>

  <!--- Unknown browser --->

  <cfelse>

  <cfset browser.name = userAgent>

  <cfset browser.version = 0>

  </cfif>

  </cfif>

  <cfset caller.browser = browser>

  <cfset thistag.generatedcontent = "">