convertCurrency = (input) ->
  value = $(input).val().replace /[^\d\.]/g, ''
  float = parseFloat(value)
  float = 0 if isNaN(float)
  precision = parseInt(input.attr('data-precision'))
  if precision is 0
    val = float.toString().replace /\.\d*/, ''
  else
    val = float.toString().replace new RegExp("(\\.\\d{#{precision}})\\d*"), '$1'
  val = parseFloat val
  $(input).val val || ''