On a form I have just built in Contour I need to add some jquery and an ajax call to perform an autocomplete on a textbox.

The form has a Dropdown box which has the states in Australia.

And it has a text box to enter a busness name. The business names are to be read from a database with a query based on the state the user has selected.

Looking at the form that is output by Contour, I can see that the form elements have a rather 'guid' looking ID value. For example, my Business Name textbox above is rendered like this..

<input id="1da50409-8282-42a8-9096-779046c42fdb" class="text" type="text" etc etc 

Now this might seem like a simple question, but I need to be sure. Will this ID value be 100% persistant. Will this ID value ever ever change? Can I be sure that Umbraco will not render this field with another ID somewhere down the track, regardless of how many other form elements I add or remove?

If I know that my jquery can reference this textbox like this..

$('#1da50409-8282-42a8-9096-779046c42fdb')

. . . then there is no problem. I just need to confirm this.