Browser & OS Detection

function os(){

    OSName="Unknown OS";
    if (navigator.appVersion.indexOf("Win")!=-1){
        OSName="Windows";
        browser();
        return [OSName, BRWSRName];
    }
}


function browser() {

    BRWSRName="Unknown Browser";
    if (navigator.appVersion.indexOf("Chrome")!=-1) BRWSRName="Chrome";
    if (navigator.userAgent.indexOf("IE")!=-1) BRWSRName="Internet Explorer";
    if (navigator.userAgent.indexOf("Firefox")!=-1) BRWSRName="Firefox";

}

os();