function clearCookies(wildcardDomain=false, primaryDomain=true, path=null){
    pathSegment= path ? '; path=' + path : ''
    expSegment="=;expires=Thu, 01 Jan 1970 00:00:00 GMT"
    document.cookie.split(';').forEach(
        function(c) { 
            primaryDomain && (document.cookie = c.replace(/^ +/, "").replace(/=.*/, expSegment + pathSegment))
            wildcardDomain && (document.cookie = c.replace(/^ +/, "").replace(/=.*/, expSegment + pathSegment + '; domain=' + document.domain))
         }
     )
}