Add individual label for each choice in multichoice list

This post describes how to add individual labels for each choice in a multi choice list.
This is a follow-up on the post on how to modify formlabel in SharePoint form.

The end result looks like this:

Read the previous post to get the basics, then modify the code like this:

<script type="text/javascript" src="/test/English/Javascript/jquery-1.3.2.min.js"></script>
<script type="text/javascript">
fields = init_fields();

var myNewLabel = "<br><div>Here is some custom text added by adressing the formlabel with jQuery!</div>" +
				 "<br><div>You can insert images to:<br><img src='/test/English/Shared%20Documents/jQuery_img.jpg' border='0'></div>"

$(fields['MyChoice']).find(".ms-formlabel h3").after(myNewLabel);

// Array of all descriptions - must be the same number of elements as the number of choices in the choice-list
var arrMyChoice = ['Description for choice 1',
				'Description for choice 2',
				'Description for choice 3',
				'Description for choice 4',
				'Description for choice 5',
				'Description for choice 6',
				'Description for choice 7',
				'Description for choice 8',
				'This is the longest: Description for choice 9',
				'Description for choice 10',
				'Description for choice 11',
				'Description for choice 12',
				'Description for choice 13',
				'Description for choice 14',
				'Description for choice 15',
				'Description for choice 16',
				'Description for choice 17',
				'Description for choice 18',
				'Description for choice 19',
				'Description for choice 20'];

// Call the script that inserts the descriptions
descriptionBeforeChoice('MyChoice',arrMyChoice,300);

function descriptionBeforeChoice(FieldInternalName,arrName,widthOfCustomLabel){
	$(fields[FieldInternalName]).find(".ms-formbody").find(":checkbox").each(function(idx){
		// Add alternating style to make it easier to follow the lines in the form
		var trClass = '';
		if(idx%2==0){
			trClass = 'ms-alternatingstrong';
		}
		$(this).before("<span style='display:inline-block;width:" + widthOfCustomLabel + ";white-space:nowrap'>" + arrName[idx] + "</span>")
			.parent().css({'white-space':'nowrap'})
			.parents('tr:first').addClass(trClass);
	});
}

function init_fields(){
  var res = {};
  $("td.ms-formbody").each(function(){
	  if($(this).html().indexOf('FieldInternalName="')<0) return;	
	  var start = $(this).html().indexOf('FieldInternalName="')+19;
	  var stopp = $(this).html().indexOf('FieldType="')-7; 
	  var nm = $(this).html().substring(start,stopp);
	  res[nm] = this.parentNode;
  });
  return res;
}
</script>

Follow up: Get variables in a script from another list

Feel free to ask if anything is unclear!
Alexander