$('a.type').click(function()
{
   $(this).addClass('active').siblings('a').removeClass('active');
   $('.custom .amount span').text( $(this).find('span:first').text() );
   $('form input[name="currency_code"]').attr('value', $(this).attr('rel') );
   
   $('form input[name="amount"]:text').focus();
})

$('.name input:text').focus(function(event)
{
   if($(this).attr('rel') == 'true')
      $(this).removeAttr('rel').attr('value', '');
});

$('.amount input:text').keydown(function(event)
{
   if(event.which != 8 && event.which != 0         // Backspace and null
      && event.which != 35 && event.which != 36    // Home and end
      && event.which != 190 && event.which != 110  // Decimal point
      && (event.which < 48 || event.which > 57)    // Numbers
      && (event.which < 96 || event.which > 105))  // Number pad
      return false;
});

$('form input[name="amount"]:text').focus();