

The only requirements are:
Put a class of "parent" on each parent row (tr) 
Give each parent row (tr) an id 
Give each child row a class of "child-ID" where ID is the id of the parent tr that it belongs to 
Example Code 
$(function() { 
 $('tr.parent') 
 .css("cursor","pointer") 
 .attr("title","Click to expand/collapse") 
 .click(function(){ 
 $(this).siblings('.child-'+this.id).toggle(); 
 }); 
 $('tr[@class^=child-]').hide().children('td'); 
});Example Table (click a row) 
| ID | Name | Total | |
|---|---|---|---|
| 123 | Bill Gates | 100 | |
| 2007-01-02 | A short description | 15 | |
| 2007-02-03 | Another description | 45 | |
| 2007-03-04 | More Stuff | 40 | |
| 456 | Bill Brasky | 50 | |
| 2007-01-02 | A short description | 10 | |
| 2007-02-03 | Another description | 20 | |
| 2007-03-04 | More Stuff | 20 | |
| 789 | Phil Upspace | 75 | |
| 2007-01-02 | A short description | 33 | |
| 2007-02-03 | Another description | 22 | |
| 2007-03-04 | More Stuff | 20 | |
