function Logout()
{

    var a_all_cookies = document.cookie.split( ';' );
    Delete_Cookie( "myCookie", '/', '' );
    a_all_cookies = document.cookie.split( ';' );
    location.reload(true);
}

function Get_Cookie( name ) {	
    var start = document.cookie.indexOf( name + "=" );
    var len = start + name.length + 1;
    if ( ( !start ) && ( name != document.cookie.substring( 0, name.length ) ) )
    {
        return null;
    }
    if ( start == -1 ) return null;
        var end = document.cookie.indexOf( ";", len );
    if ( end == -1 ) 
        end = document.cookie.length;
    return unescape( document.cookie.substring( len, end ) );
}

function Delete_Cookie( name, path, domain ) {
    if ( Get_Cookie( name ) )
         document.cookie = name + "=" + ( ( path ) ? ";path=" + path : "") + ( ( domain ) ? ";domain=" + domain : "" ) + ";expires=Thu, 01-Jan-1970 00:00:01 GMT";
}