Quick fix for bootboxjs to work with bootstrap 3.0.0, basically just added parts.push("<div class='modal-dialog'>"); parts.push("<div class='modal-content'>"); and parts.push("</div>"); parts.push("</div>");

gistfile1.js

var parts = ["<div class='bootbox modal' tabindex='-1' style='overflow:hidden;'>"];

parts.push("<div class='modal-dialog'>");
parts.push("<div class='modal-content'>");

if (options['header']) {
    var closeButton = '';
    if (typeof options['headerCloseButton'] == 'undefined' || options['headerCloseButton']) {
        closeButton = "<a href='"+_defaultHref+"' class='close'>&times;</a>";
    }

    parts.push("<div class='modal-header'>"+closeButton+"<h3>"+options['header']+"</h3></div>");
}

// push an empty body into which we'll inject the proper content later
parts.push("<div class='modal-body'></div>");

if (buttons) {
    parts.push("<div class='modal-footer'>"+buttons+"</div>");
}

parts.push("</div>");
parts.push("</div>");
parts.push("</div>");

var div = $(parts.join("\n"));