gistfile1.js

/**
 * Event handler to prevent richtext and linebreaks in contentEditable DIVs
 */
$('body').on('keydown paste', 'div.editfield', function(e) {
	var $field = $(e.currentTarget);
	if (e.keyCode===13 && $field.hasClass('multiline')) {
		return true;
	} else if (e.keyCode===13 || e.type==='paste') {
		setTimeout(function() {
			$field.html($field.text());
		},0);
	}
});