JSFiddle - React, Tailwind, and code Playground

HTML

<body>

  <div class="navbar navbar-inverse navbar-fixed-top" role="navigation">  
    <div class="navbar-inner">
      <div class="container-fluid">
        <a class="btn btn-navbar" data-toggle="collapse" data-target=".nav-collapse">
          <span class="icon-bar"></span>
          <span class="icon-bar"></span>
          <span class="icon-bar"></span>
        </a>
        <a class="brand" href="#">Home</a>        
          <ul class="nav">
           <li class="active"><a href="#">Menu 1</a></li>         
            <li><a href="#">Menu 2</a></li>
            <li><a href="#">Menu 3</a></li>          
          </ul>
      </div>     
            <ul class="nav nav-tabs">
            <li><a href="#tab1-0" data-toggle="tab">Tab 1</a></li>
            <li><a href="#tab1-1" data-toggle="tab">Tab 2</a></li>
            <li><a href="#tab1-2" data-toggle="tab">Tab 3</a></li>
            <li><a href="#tab1-3" data-toggle="tab">Tab 4</a></li>        
            </ul>                
    </div>
  </div>  
  <div class="container-fluid">
    <div class="row-fluid"> 
        <div class="tab-content">
              <div class="tab-pane" id="tab1-0">
                   <ul class="nav nav-list">
                      <li class="nav-header">Menu 1</li>
                   <li><a href="#" id="menuItemUm">Menu Item tab 1</a></li>                      
                  </ul>
              </div>
              <div class="tab-pane" id="tab2-0">
                 <ul class="nav nav-list">
                 <li class="nav-header">Menu 2</li>
                 <li><a href="#" id="menuItemDois">Menu Item tab 2</a></li>                      
                 </ul>
              </div>                       
            </div>
            <div class="span3">
            </div>      
      <div class="span9" id="divPrincipal">          
        <div class="row-fluid">      
            <iframe id="if" frameborder="0"></iframe>  
          <div class="span9"></div>
        </div>
     ...

CSS

/*!
 * Bootstrap v2.3.2
 *
 * Copyright 2013 Twitter, Inc
 * Licensed under the Apache License v2.0
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Designed and built with all the love in the world by @mdo and @fat.
 */

a img {
  border:none;
  outline: none;
  border:0;
}

footer {
  display:block;
  text-align: center;
  clear:both;
}
iframe {
  border:0;
  min-height:500px;
  width:100%; 
}

#divPrincipal {
  width:80%;
  float:right;
  position: relative;
  height:100%;
}
#ifPrincipal {
  width:100%;
  min-height:500px;
  border:0;
}

.clearfix {
  *zoom: 1;
}

.clearfix:before,
.clearfix:after {
  display: table;
  line-height: 0;
  content: "";
}

.clearfix:after {
  clear: both;
}

.hide-text {
  font: 0/0 a;
  color: transparent;
  text-shadow: none;
  background-color: transparent;
  border: 0;
}

.input-block-level {
  display: block;
  width: 100%;
  min-height: 30px;
  -webkit-box-sizing: border-box;
     -moz-box-sizing: border-box;
          box-sizing: border-box;
}


article,
aside,
details,
figcaption,
figure,
header,
hgroup,
nav,
section {
  display: block;
}

audio,
canvas,
video {
  display: inline-block;
  *display: inline;
  *zoom: 1;
}

audio:not([controls]) {
  display: none;
}

html {
  font-size: 100%;
  -webkit-text-size-adjust: 100%;
      -ms-text-size-adjust: 100%;
}

a:focus {
  outline: thin dotted #333;
  outline: 5px auto -webkit-focus-ring-color;
  outline-offset: -2px;
}

a:hover,
a:active {
  outline: 0;
}

sub,
sup {
  position: relative;
  font-size: 75%;
  line-height: 0;
  vertical-align: baseline;
}

sup {
  top: -0.5em;
}

sub {
  bottom: -0.25em;
}

img {
  width: auto\9;
  height: auto;
  max-width: 100%;
  vertical-align: middle;
  border: 0;
  -ms-interpolation-mode: bicubic;
}

#map_canvas img,
.google-maps img {
  max-width: none;
}

button,
input,
select,
textarea {
  margin: 0;
  font-size: 100%;
  vertical-align: middle;
}

button,
input {
  *overflow: visible;
  line-height:...

JavaScript

$("ul.nav-tabs a").click(function (e) {
      e.preventDefault();  
      $(this).tab('show');
});
    $("#menuItem").click(function() {
    $("#if").attr('src', 'http://Exemplo/Example/main.php');
    });