Update src/deprecated.js

Determine the browser better way
Do not need to use userAgent

src/deprecated.js

@@ -1,4 +1,35 @@
 // Limit scope pollution from any deprecated API
-// (function() {
+(function() {
+var browser = {};
 
-// })();
+//IE特有的条件编译，勿当做注释删除
+if(/*@cc_on!@*/0){
+	browser.msie = document.documentMode || (document.compatMode == "CSS1Compat" ? "XMLHttpRequest" in window ? 7 : 6 : 5);
+	navigator.language = navigator.userLanguage;
+} else if ( window.opera ) {
+	//Opera
+	browser.opera = opera.version();
+	navigator.language = navigator.language.replace(/-\w+$/, function(str ) {
+		return str.toUpperCase();
+	});
+
+} else if ( window.netscape && navigator.product == "Gecko" ) {
+	//Firefox
+	browser.gecko = true;
+} else {
+	//WebKit
+	browser.webkit = true;
+
+	if(window.chrome){
+		//判定为Chrome
+		browser.chrome = true;
+	} else if(/^apple\s+/i.test(navigator.vendor)) {
+		//判定为Safari
+		browser.safari = true;
+	}
+
+}
+
+jQuery.browser = browser;
+
+})();