Matrix_add_header_row.js

## Add Header Row to Matrix

This function allow one to add the matrix header row at a custom location in the matrix. While Qualtrics allows repeating the header row within the table, it only does so after 5 or so rows. By  using this function, one can ensure the options are visible at all times.
The script below is for adding the header as the 2th row, but multiple rows can be added with slight modification.
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[*Link to Working Demo*](https://iima.au1.qualtrics.com/jfe/preview/SV_2rCRZYIQqNq0nzv/BL_9Hnthujr7TA2LvD?Q_SurveyVersionID=current) 
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*Screenshot*:

<img src="../screenshots/matrix_add_header_row.png" title="matrix-with-header-row-at-custom-location" alt="matrix-with-header-row-at-custom-location" style="width:50%;display: block; border: 2px solid"/>

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*Question Javascript:*
```{js}
Qualtrics.SurveyEngine.addOnReady(function()
{
    choice_table = this.getChoiceContainer();
    
    //Numbering starts from 0. So the header is the 0th row, the first statement row 1 etc. 
    //This will create an empty row above statement 4. YOu can change it accordingly. 
    
    new_row = choice_table.insertRow(2);
    
    //rows[0] refers to the header. 
    // So this takes the header row fills up the empty row just created. 
	
    new_row.innerHTML = choice_table.rows[0].innerHTML;

});

```