var section ='home';

// Mouse over navigation
function mouse_enter(image,name)
 {
 document.images[section].src='/images/' + section + '_b.gif'; 
 document.images[image].src='/images/' + name + '_ul.gif'; 
 }

// Mouse over navigation
function mouse_exit(image,name)
 {
 document.images[section].src='/images/' + section + '_ul.gif'; 
 document.images[image].src='/images/' + name + '_b.gif'; 
 }

function start_a_tag(URL,image)
 {
 document.write("<A HREF=\""+URL+"\" onMouseOver=\"mouse_enter('"+image+"','"+image+"')\" onMouseOut=\"mouse_exit('"+image+"','"+image+"')\">");
 }

function img_tag(URL,width,height,name)
 {
 document.write('<IMG SRC="'+URL+'" WIDTH="'+width+'" HEIGHT="'+height+'" BORDER="0" NAME="'+name+'">');
 }

function img_bar()
 {
 document.write('<IMG SRC="/images/bar_b.gif" WIDTH="4" HEIGHT="31">');
 }

function end_a_tag()
 {
 document.write("</A>");
 }

// Write the main nav
function write_nav(nav_section)
 {
 section = nav_section;
 
 if(section == 'home')
  {
  document.write("<A HREF=\"/usb_dmx_interface.html\">");
  img_tag('/images/home_ul.gif',63,31,'home');
  end_a_tag();
  var img1 = new Image();
  img1.src = "/images/home_b.gif";
  }
 else
  {
  var img1 = new Image();
  img1.src = "/images/home_ul.gif";
  start_a_tag('/usb_dmx_interface.html','home','home');
  img_tag('/images/home_b.gif',63,31,'home');
  end_a_tag();
  }
 img_bar();

 if(section == 'schematic')
  {
  var img2 = new Image();
  img2.src = "/images/schematic_b.gif";
  document.write("<A HREF=\"/schematic.html\">");
  img_tag('/images/schematic_ul.gif',94,31,'schematic');
  end_a_tag();
  }
 else
  {
  var img2 = new Image();
  img2.src = "/images/building_ul.gif";
  start_a_tag('/schematic.html','schematic','schematic');
  img_tag('/images/schematic_b.gif',94,31,'schematic');
  end_a_tag();
  }
 img_bar();

 if(section == 'building')
  {
  var img8 = new Image();
  img8.src = "/images/building_b.gif";
  document.write("<A HREF=\"/building.html\">");
  img_tag('/images/building_ul.gif',78,31,'building');
  end_a_tag();
  }
 else
  {
  var img8 = new Image();
  img8.src = "/images/building_ul.gif";
  start_a_tag('/building.html','building','building');
  img_tag('/images/building_b.gif',78,31,'building');
  end_a_tag();
  }
 img_bar();

 if(section == 'protocol')
  {
  var img3 = new Image();
  img3.src = "/images/protocol_b.gif";
  document.write("<A HREF=\"/protocol.html\">");
  img_tag('/images/protocol_ul.gif',84,31,'protocol');
  end_a_tag();
  }
 else
  {
  var img3 = new Image();
  img3.src = "/images/protocol_ul.gif";
  start_a_tag('/protocol.html','protocol','protocol');
  img_tag('/images/protocol_b.gif',84,31,'protocol');
  end_a_tag();
  }
 img_bar();
 
 if(section == 'software')
  {
  var img4 = new Image();
  img4.src = "/images/software_b.gif";
  document.write("<A HREF=\"/software.html\">");
  img_tag('/images/software_ul.gif',85,31,'software');
  end_a_tag();
  }
 else
  {
  var img4 = new Image();
  img4.src = "/images/software_ul.gif";
  start_a_tag('/software.html','software','software');
  img_tag('/images/software_b.gif',85,31,'software');
  end_a_tag();
  }
 img_bar();

 if(section == 'ordering')
  {
  var img5 = new Image();
  img5.src = "/images/ordering_b.gif";
  document.write("<A HREF=\"/ordering.html\">");
  img_tag('/images/ordering_ul.gif',88,31,'ordering');
  end_a_tag();
  }
 else
  {
  var img5 = new Image();
  img5.src = "/images/ordering_ul.gif";
  start_a_tag('/ordering.html','ordering','ordering');
  img_tag('/images/ordering_b.gif',88,31,'ordering');
  end_a_tag();
  }
 img_bar();

 if(section == 'forum')
  {
  var img6 = new Image();
  document.write("<A HREF=\"/forum/\">");
  img6.src = "/images/forum_b.gif";
  img_tag('/images/forum_ul.gif',69,31,'forum');
  end_a_tag();
  }
 else
  {
  var img6 = new Image();
  img6.src = "/images/forum_ul.gif";
  start_a_tag('/forum/','forum','forum');
  img_tag('/images/forum_b.gif',69,31,'forum');
  end_a_tag();
  }
 img_bar();
 
 
 if(section == 'LightsOn')
  {
  var img7 = new Image();
  document.write("<A HREF=\"/LightsOn/\">");
  img7.src = "/images/LightsOn_b.gif";
  img_tag('/images/LightsOn_ul.gif',87,31,'LightsOn');
  end_a_tag();
  }
 else
  {
  var img7 = new Image();
  img7.src = "/images/LightsOn_ul.gif";
  start_a_tag('/LightsOn/','LightsOn','LightsOn');
  img_tag('/images/LightsOn_b.gif',87,31,'LightsOn');
  end_a_tag();
  }
 img_bar();

 if(section == 'links')
  {
  var img9 = new Image();
  img9.src = "/images/links_b.gif";
  document.write("<A HREF=\"/links.html\">");
  img_tag('/images/links_ul.gif',60,31,'links');
  end_a_tag();
  }
 else
  {
  var img9 = new Image();
  img9.src = "/images/links_ul.gif";
  start_a_tag('/links.html','links','links');
  img_tag('/images/links_b.gif',60,31,'links');
  end_a_tag();
  }
 }