function setLetter() { document.getElementById('icon_letter').innerHTML = "<p>" + document.getElementById('letter_field').value.substr(0,1) + "</p>"; }
function setBackground() { document.getElementById('icon_bg').className = document.getElementById('background_color').value; }
function setHighlight() { document.getElementById('icon_highlight').style.opacity = document.getElementById('highlight_amount').value; }