gistfile1.js

function wordwrap( str, width, brk, cut ) {
    brk = brk || '\n';
    width = width || 75;
    cut = cut || false;

    if (!str) { return str; }

    var regex = '.{1,' +width+ '}(\\s|$)' + (cut ? '|.{' +width+ '}|.+$' : '|\\S+?(\\s|$)');

    matches = str.match( new RegExp(regex, 'g') );
    for (i = 0; i < matches.length; i++) {
    	matches[i] = matches[i].trim();
    }

    return matches.join( brk );
}