检测浏览器的js

CheckBrowser.js
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<!--
if (window.navigator.userAgent.indexOf("MSIE")>=1)
{
//ΪIE
//setActiveStyleSheet("default.css");
}
else
{
if (window.navigator.userAgent.indexOf("Firefox")>=1)
{
//ΪFirefox
//alert("ʹõΪFirefox ڼ⣬ʹIE");
alert("The browser you use is Firefox. Because of compatibility, please use IE.");
location.href="javascript:window.close()";
}
else
{
//Ϊ
//alert("ʹõIE ڼ⣬ʹIE");
alert("The browser you use is not IE. Because of compatibility, please use IE.");
location.href="javascript:window.close()";
}
}
//-->