Unidentified attribute generated by jquery in html tag

Unidentified attribute generated by jquery in html tag

Hi folks,
 
 
    My first post here.  I've been digging through the jquery ui demos and the example on the site here trying to get a good handle on the way jquery, ui and it's many plugins work.  I've noticed that in the accordion widget there is an unidentified attribute being generated in the html code that looks like this:  jQuery1234567890012 = "35".  I've been trying to find out what part of the jquery library generates this code and what it's being used for.  I know that it's a part of the implementation and that as a rule I should not have any concern over it.  In fact, it shouldn't matter to me what it is since as long as I code to the given api my stuff should work reguardless, but tell me, who can really dig through code and see undocumented stuff and not be driven nutty wondering what it's doing?
 
Maybe I'm mistaken and it's actually being generated by the developer tool in IE, but I don't think so.  So, could somebody enlighten me and tell me what part of jquery is generating this attribute and what it used for?
 
Thanks,
Mark