ブラウザ判定

gistfile1.js

function BROWSER(){
	var userAgent = window.navigator.userAgent.toLowerCase();
	var appVersion = window.navigator.appVersion.toLowerCase();
	var BROWSER;
	if (userAgent.indexOf("msie") > -1) {
		if (appVersion.indexOf("msie 6.0") > -1) {
			BROWSER = "IE6";
		}
		else if (appVersion.indexOf("msie 7.0") > -1) {
			BROWSER = "IE7";
		}
		else if (appVersion.indexOf("msie 8.0") > -1) {
			BROWSER = "IE8";
		}
		else if (appVersion.indexOf("msie 9.0") > -1) {
			BROWSER = "IE9";
		}
		else {
			BROWSER = "IE?";
		}
	}
	else if (userAgent.indexOf("firefox") > -1) {
		BROWSER = "Firefox";
	}
	else if (userAgent.indexOf("opera") > -1) {
		BROWSER = "Opera";
	}
	else if (userAgent.indexOf("chrome") > -1) {
		BROWSER = "Google Chrome";
	}
	else if (userAgent.indexOf("safari") > -1) {
		BROWSER = "Safari";
	}
	else {
		BROWSER = "Unknown";
	}
	return(BROWSER);
}