Open payroll connectivity for Europe

<script>
//Step 1 - Call our API using your backend to generate a transaction_id
//Step 2 - Call your back end to retrieve a transaction_id from mistho
const misthoTransactionId = <%= Value returned by API call to acquire transaction_id %>

//Step 3 - Initialize Mistho app
const mistho_window = window.open('https://app.mistho.io?transaction_id=' + misthoTransactionId, '_blank');

mistho_window.onload = function(){ 
    // Optional, called when Mistho window loads
    console.log('Mistho app loaded')
}

mistho_window.onclose = function(){ 
    // Optional, called when Mistho window is closed by the user.
    console.log('Mistho app closed')
}
</script>