POS-Server/app/views/cash_registers_moves/new.js.erb

$('#dialog h3.modal-title').html("Registro de <%= @sale.credit? ? 'abono' : 'pago'  %>");

$('#dialog').modal({ closeOnEscape: false });
// Rend$( ".selector" ).dialog({ closeOnEscape: false });er the edit form
<% if @sale.saletype == 'credit' %>
	$('.modal-body').html('<%= j render("cash_registers_moves/abonoform") %>');
<% else %>
	$('.modal-body').html('<%= j render("cash_registers_moves/form") %>');
<% end %>
// Show the dynamic dialog
$('#dialog').modal("show");

// Set focus to the first element
$('#dialog').on('shown.bs.modal', function () {
      $('.first_input').focus();
 })