editing Old Query Designer Checkbox javascript (22)

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{{
// Checkboxes follow the below order:
//   unchecked -> checked (ascending sort) -> checked (descending sort) -> unchecked
// Checkboxes get a number such that the lowest number was the earliest checked and the numbers
//   are always consecutive from '1'.  The suffix 'D' is appended if the sort is descending.
function OnSortClick(e, that)
{
	that = that || this;
	
	var label = that.nextSibling;
	
	var jqf = GetJQF(that);
	
	if (jqf.Sort > 0 && !(jqf.Flags & QueryFieldFlags.SortDesc))
	{
		label.innerHTML += 'D';
		jqf.Flags |= QueryFieldFlags.SortDesc;
		
		SetJQF(that, jqf);
		return false; // cancel uncheck
	}
	
	var checkboxes = GetNthInput('checkbox', 1, true);
	
	// we weren't just SortDesc, so we're removing this sort;
	//   we probably need to change other numbers
	if (!this.checked)
	{
		var removedSortLevel = jqf.Sort;
		
		if (removedSortLevel < checkboxes.length + 1)
		{
			for (var i = 0; i < checkboxes.length; i++)			
			{
				if (checkboxes[i] == that)
					continue;
			
				var label2 = checkboxes[i].nextSibling;
				var jqf2 = GetJQF(checkboxes[i]);
				
				if (jqf2.Sort >= removedSortLevel)
				{
					label2.innerHTML = --jqf2.Sort + (jqf2.Flags & QueryFieldFlags.SortDesc ? 'D' : '');
					SetJQF(checkboxes[i], jqf2);
				}
			}
		}
		
		jqf.Sort = 0;
		jqf.Flags &= ~QueryFieldFlags.SortDesc;
		label.innerHTML = '';
		SetJQF(that, jqf);
	}
	else
	{		
		label.innerHTML = jqf.Sort = checkboxes.length;
		SetJQF(that, jqf);
	}
}
}}

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