// nav_main.js
document.write('<ul>');
document.write('<a href="about_erra.htm"><li>About ERRA</li></a>');
document.write('<a href="transportation.htm"><li>Transportation</li></a>');
document.write('<a href="yess_battery.htm"><li>Energy Storage Solutions</li></a>');
document.write('<a href="heating_cooling.htm"><li>Heating Cooling and Refrigeration</li></a>');
document.write('<a href="green_power.htm"><li>Green Power Generation</li></a>');
document.write('<a href="ev_power.htm"><li>EV Power</li></a>');
document.write('<a href="industrial_technologies.htm"><li class="last">Industrial Technologies</li></a>');
document.write('</ul>');