$(document).ready(function() {
  swap_letter();    
});

function swap_letter() {
  var first_paragraph = $('div.drop-cap p')[0];
  if (!first_paragraph) return false;
  var node = first_paragraph;
  while (node.childNodes.length) {
    node = node.firstChild;
  }
 
  var text = node.nodeValue;
  var first_letter = text.substr(0,1);
  var match = /[a-zA-Z]/.test(first_letter);
  if ( match ) {
    node.nodeValue = text.slice(1);
    $('<img />')
        .attr('src','images/illum/' + first_letter.toLowerCase() + '.png')
        .attr('alt',first_letter)
        .addClass('fancy-letter')
        .prependTo( first_paragraph );
  }
}