The javascript for the live chat button, makes the rest of the javascript for the navigation not work and only in internet explorer please help.

<!--start http://www.livehelpnow.net -->
<div style="text-align: center;">

<div>
<script type="text/javascript">
var lhnJsHost = (("https:" == document.location.protocol) ? "https://" : "http://");
document.write(unescape("%3Cscript src='" + lhnJsHost + "www.livehelpnow.net/lhn/scripts/lhnvisitor.aspx?div=&amp;zimg=33&amp;lhnid=8456&amp;iv=1&amp;iwidth=101&amp;iheight=35&amp;zzwindow= 0&amp;d=0&amp;custom1=&amp;custom2=&amp;custom3=' type='text/javascript'%3E%3C/script%3E"));</script>
</div>

<div><a title="Help desk software" href="http://www.LiveHelpNow.net/" style="font-size:10px;" target="_blank">Help desk software</a></div>
</div>
<!--end http://www.livehelpnow.net -->



document.write("<div class='nav' style='color: #0050A3;'>Products <img src='/images/dnav_arrow.gif' width='10' height='10' border='0'></a></div>");

document.write("<div class='nav_l2'><a href='/force_gauge.html'>Force Gauges <img src='/images/onav_arrow.gif' alt='' id='arrow4' width='10' height='10' border='0'></a></div>");

document.write("<div class='nav_l2'><a href='/instruments/menu-torque.html'>Torque Gauges <img src='/images/onav_arrow.gif' alt='' id='arrow4' width='10' height='10' border='0'></a></div>");

document.write("<div class='nav_l2'><a href='/instruments/menu-indicat.html'>Sensors &amp; Indicators <img src='/images/onav_arrow.gif' alt='' id='arrow4' width='10' height='10' border='0'></a></div>");

document.write("<div class='nav_l2'><a href='/instruments/menu-loadcells.html'>Smart Load Cells <img src='/images/onav_arrow.gif' alt='' id='arrow4' width='10' height='10' border='0'></a></div>");

document.write("<div class='nav_l2'><a href=\"javascript: block_closed('menu3','arrow3');\">Test Stands</a> <a href=\"javascript: block_closed('menu3','arrow3');\"><img src='/images/unav_arrow.gif' alt='' id='arrow3' width='10' height='10' border='0'></a></div>");

document.write("<ul id='menu3' class='nav_l3'>");
document.write("<li><a href='/instruments/menu-stands.html'>Motorized Test Stands</a></li>");
document.write("<li><a href='/instruments/menu-manualstands.html'>Manual Test Stands</a></li>");
document.write("</ul>");


document.write("<div class='nav_l2'><a href='/instruments/menu-testsys.html'>Ergonomics Test Kits <img src='/images/onav_arrow.gif' alt='' id='arrow4' width='10' height='10' border='0'></a></div>");

document.write("<div class='nav_l2'><a href='/instruments/menu-grips.html'>Grips &amp; Attachments <img src='/images/onav_arrow.gif' alt='' id='arrow4' width='10' height='10' border='0'></a></div>");

document.write("<div class='nav_l2'><a href='/instruments/menu-accessories.html'>Accessories <img src='/images/onav_arrow.gif' alt='' width='10' height='10' border='0'></a></div>");

document.write("<div class='nav_l2'><a href='/instruments/menu-software.html'>Software <img src='/images/onav_arrow.gif' alt='' id='arrow7' width='10' height='10' border='0'></a></div>");

document.write("<div class='nav_l2'><a href='/instruments/menu-testers.html'>Configuring A System <img src='/images/onav_arrow.gif' alt='' id='arrow4' width='10' height='10' border='0'></a></div>");

document.write("<div class='nav_l2'><a href='/instruments/menu-legacy.html'>Legacy Products <img src='/images/onav_arrow.gif' alt='' id='arrow4' width='10' height='10' border='0'></a></div>");

document.write("<div class='nav'><a href='/services/general.html'>Services <img src='/images/onav_arrow.gif' width='10' height='10' border='0'></a></div>");
document.write("<div class='nav'><a href='/downloads.html'>Downloads <img src='/images/onav_arrow.gif' width='10' height='10' border='0'></a></div>");
document.write("<div class='nav'><a href='/news.html'>News <img src='/images/onav_arrow.gif' width='10' height='10' border='0'></a></div>");
document.write("<div class='nav'><a href='/warranty.html'>Product Registration <img src='/images/onav_arrow.gif' width='10' height='10' border='0'></a></div>");
document.write("<div class='nav'><a href='/applications/index.html'>Gallery <img src='/images/onav_arrow.gif' width='10' height='10' border='0'></a></div>");
document.write("<div class='nav'><a href='/inquiries.html'>Inquiries <img src='/images/onav_arrow.gif' width='10' height='10' border='0'></a></div>");

document.write("<div class='nav'><a href='/about.html'>About Mark-10</a> <img src='/images/onav_arrow.gif' width='10' height='10' border='0'></div>");

document.write("<div class='nav'><a href=\"javascript: block_closed('menu8','arrow6');\">Where To Buy <img src='/images/unav_arrow.gif' alt='' id='arrow6' width='10' height='10' border='0'></a></div>");

document.write("<ul id='menu8' class='nav_l3'>");
document.write("<li><a href='/order.html'>Ordering Direct</a></li>");
document.write("<li><a href='/distributor-us.html'>US Distributors</a></li>");
document.write("<li><a href='/distributor-intl.html'>International Distributors</a></li>");
document.write("<li><a href='/distributor-catalogs.html'>Catalog / Web Sales</a></li>");
document.write("<li><a href='/gsa.html'>US Government Purchases</a></li>");
document.write("<li><a href='/reseller.html'>Become a Reseller</a></li>");
document.write("</ul>");

document.write("<div class='nav'><a href=\"javascript: block_closed('menu9','arrow6');\">Resources <img src='/images/unav_arrow.gif' alt='' id='arrow6' width='10' height='10' border='0'></a></div>");

document.write("<ul id='menu9' class='nav_l3'>");
document.write("<li><a href='/tools/load.html'>Conversion Calculators</a></li>");
document.write("<li><a href='/faq.html'>Frequent Questions</a></li>");
document.write("</ul>");


document.write("<div class='nav'><a href='/contact.html'>Contact Us</a> <img src='/images/onav_arrow.gif' width='10' height='10' border='0'></div>");

document.write("<div class='nav'><a href='/index.html'>Home</a> <img src='/images/onav_arrow.gif' width='10' height='10' border='0'></div>");


document.write("<div style='margin-top:15px;'><a href='http://www.mark-10.com/gsa.html'><img src='http://www.mark-10.com/images/GSA-small.gif' border='0'></></div>");
document.write("<div style='margin-top:15px;'><a href='http://www.mark-10.com/video.html'><img src='http://www.mark-10.com/images/Video-logo.jpg' width='154' height='54' border='0'></></div>");
document.write("<div style='margin-top:15px; text-align:center;'><a href='http://mark-10blog.blogspot.com'><img src='http://www.mark-10.com/images/blogger_logo.png' style='border:0;'><a href='http://www.facebook.com/pages/Mark-10-Force-Measurement/138943942794711'><img src='http://www.mark-10.com/images/facebook-logo.png' style='border:0;'></></div>");
//http://mark-10blog.blogspot.com