var Sys = {};
var ua = navigator.userAgent.toLowerCase();
if (window.ActiveXObject)
Sys.ie = ua.match(/msie ([\d.]+)/)[1]
else if (document.getBoxObjectFor)
Sys.firefox = ua.match(/firefox\/([\d.]+)/)[1]

if(Sys.ie) document.write('IE: '+Sys.ie);
if(Sys.firefox) document.write('Firefox: '+Sys.firefox);
</script>

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