ID generation for accordion fails when there are 10 or more sections

[fingertipsy]

The accordion "show" buttons are not functioning correctly for sections with indices greater than 9.
It seems the IDs for sections with indices greater than 9 are causing conflicts in the HTML. The result is that the "show content" button for section 11 open the content for section 1, 12 opens 2 and so forth.

[jenisayshi]

think this is caused by this line in the accordian.js code only picking up the last digit of the heading :)

// get z value from name (Map argument)
var level = str.substring(str.length - 1);