Show column header in text grid question

Challenge

In order to indicate the unit of values to be put inside a text grid question
As a questionnaire creator
I want to add headers to columns in text grid question
Example

Solution

Locate the first sub question's row, add the new row containing the headers before that row.

Code

quest.onInit = function()
{
	$("#grid_subquestion_text_1").parent().before($("<tr><th></th><th>Antal minutter</th></tr>"));
}