问PowerShell脚本自动打开浏览器

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$destination="https://adfs.somedomain.com/adfs/ls/";
$response = '';
$username = 'some username';
$password = 'some password';
$AuthMethod = 'FormsAuthentication';
$postParams = @{
    destination="$destination";
    flags='0';
    forcedownlevel='0';
    trusted='0'
    UserName="$($username)";
    Password="$($password)";
    AuthMethod = "$($AuthMethod)";
    isUtf8='1'
}

$url = "$($destination)?wa=wsignin1.0&wtrealm=urn:federation:cas"
$response = Invoke-WebRequest -uri $url -Method POST -body $postParams;
$wa = $response.InputFields.value[0];