Order of attributes in XML File

How can we control the order of attributes on the XML file.

Why we see diferent orders of attributes when im opening the XML with diferent Program for that (for instance Notepad, Firefox)

I open it on Notepad and Firefox:
I have this order:

 <currency>
    <Code>AED</Code>
    <Description />
    <Details AmountDecimalPlaces="2:2" UnitAmountDecimalPlaces="2:5" AmtRoundingPrecision="0,01" UnitAmtRoundingPrecision="0,001" />
  </currency>
  <currency>

When opening on IE i have this order:

<Code>AED</Code>

<Description/>

<Details UnitAmtRoundingPrecision="0,001" AmtRoundingPrecision="0,01" UnitAmountDecimalPlaces="2:5" AmountDecimalPlaces="2:2"/>

</currency>

Thanks for the help,

Daniel CSS

<currency></currency>