function loadJs(file){
    var scriptTag = document.getElementById('loadScript');
    var head = document.getElementsByTagName('head').item(0);
    if(scriptTag) head.removeChild(scriptTag);
    script = document.createElement('script');
    script.src = "../js/mi_"+file+".js";
    script.type = 'text/javascript';
    script.id = 'loadScript';
    head.appendChild(script);
}

function loadCss(file){
    //var cssTag = document.getElementById('loadCss');
    var head = document.getElementsByTagName('head').item(0);
    //if(cssTag) head.removeChild(cssTag);
    css = document.createElement('link');
    css.href = file;
    css.rel = 'stylesheet';
    css.type = 'text/css';
    //css.id = 'loadCss';
    head.appendChild(css);
}

	
	
	function browserinfo(){
        var Browser_Name=navigator.appName;
        var Browser_Version=parseFloat(navigator.appVersion);
        var Browser_Agent=navigator.userAgent;

		var checkBrowser = '';



        if (Browser_Agent.indexOf('Opera')!=-1){
			checkBrowser = 'Opera';
        }
		else if (Browser_Agent.indexOf('Firefox')!=-1){
			checkBrowser = 'Firefox';
        }
		else if (Browser_Agent.indexOf('MSIE 6.0')!=-1){
			checkBrowser = 'IE6';
        }
		else if (Browser_Agent.indexOf('MSIE 7.0')!=-1){
			checkBrowser = 'IE7';
        }
		else if (Browser_Agent.indexOf('MSIE 8.0')!=-1){
			checkBrowser = 'IE8';
        }
		else if (Browser_Agent.indexOf('Safari')!=-1){
			checkBrowser = 'Safari';
        }
		else{
			checkBrowser = 'IE8';
		}

		var cssName = checkBrowser+'.css';


		//loadCss('default.css');
		//alert(cssName);
		loadCss(cssName);

/*
        alert(Browser_Agent);
        alert(checkBrowser);
*/
/*
        
        var Actual_Version,Actual_Name;
        
        var is_IE=(Browser_Name=="Microsoft Internet Explorer");
        var is_NN=(Browser_Name=="Netscape");




        
        if(is_NN){
            if(Browser_Version>=5.0){
                var Split_Sign=Browser_Agent.lastIndexOf("/");
                var Version=Browser_Agent.indexOf(" ",Split_Sign);
                var Bname=Browser_Agent.lastIndexOf(" ",Split_Sign);

                Actual_Version=Browser_Agent.substring(Split_Sign+1,Version);
                Actual_Name=Browser_Agent.substring(Bname+1,Split_Sign);
            }
            else if(Browser_Agent.indexOf("Opera")!=-1){
                Actual_Name="Opera";
                var tempstart=Browser_Agent.indexOf("Opera");
                var tempend=Browser_Agent.length;
                Actual_Version=Browser_Agent.substring(tempstart+6,tempend)
            }
            else{
                Actual_Version=Browser_Version;
                Actual_Name=Browser_Name;
            }
        }
        else if(is_IE){
            var Version_Start=Browser_Agent.indexOf("MSIE");
            var Version_End=Browser_Agent.indexOf(";",Version_Start);
            Actual_Version=Browser_Agent.substring(Version_Start+5,Version_End)
            Actual_Name=Browser_Name;
            
            if(Browser_Agent.indexOf("Maxthon")!=-1){
                Actual_Name+="(Maxthon)";
            }
        }
        else{
            Actual_Name="Unknown Navigator"
            Actual_Version="Unknown Version"
        }

        navigator.Actual_Name=Actual_Name;
        navigator.Actual_Version=Actual_Version;
        
        this.Name=Actual_Name;
        this.Version=Actual_Version;*/
    }
    browserinfo();
    
 //   alert("你使用的浏览器是:"+navigator.Actual_Name+",版本号:"+navigator.Actual_Version);