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var OsObject = "";  
if(navigator.userAgent.indexOf("MSIE")>0) {  
   return "MSIE";  
}  
if(isFirefox=navigator.userAgent.indexOf("Firefox")>0){  
   return "Firefox";  
}  
if(isSafari=navigator.userAgent.indexOf("Safari")>0) {  
   return "Safari";  
}  
if(isCamino=navigator.userAgent.indexOf("Camino")>0){  
   return "Camino";  
}  if(isMozilla=navigator.userAgent.indexOf("Gecko/")>0){  
   return "Gecko";  
}  
}


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