document.write('<a href="#main"class="skip-to-main-content-link">Skip to main content</a><div class="navbar navbar-inverse navbar-static-top"><div class="container"><div class="navbar-header"><button type="button" class="navbar-toggle" data-toggle="collapse" data-target=".navbar-collapse"><span class="icon-bar"></span><span class="icon-bar"></span><span class="icon-bar"></span>Menu</button><a class="navbar-brand" style="font-size:2em;" href="index.html">Precalculus and Trigonometry</a></div><div class="navbar-collapse collapse"><ul class="nav navbar-nav navbar-right" style="margin-left:-20px;"><li><a href="index.html">Home</a></li><li><a href="ch00.html">Chapter 0</a></li><li><a href="ch01.html">Chapter 1</a></li><li><a href="ch02.html">Chapter 2</a></li><li><a href="ch03.html">Chapter 3</a></li><li><a href="ch04.html">Chapter 4</a></li><li><a href="ch05.html">Chapter 5</a></li><li><a href="ch06.html">Chapter 6</a><li><a href="about.html">About</a></li></ul></div><!--/.nav-collapse --></div></div>')