function network_building()
{
parent.parent.frames[4].location.href="msg_front.htm";
}

function network_relocation()
{
parent.parent.frames[4].location.href="msg_nrfront.htm";
}

function home_networking()
{
parent.parent.frames[4].location.href="msg_hnfront.htm";
}

function network_optimization()
{
parent.parent.frames[4].location.href="msg_nofront.htm";
}

function contact_us()
{
parent.parent.frames[4].location.href="contact_us.htm";
}

function get_quote()
{
parent.parent.frames[4].location.href="nquote.htm";
}

function consulting()
{
parent.parent.frames[4].location.href="consulting.htm";
}

function downloads()
{
parent.parent.frames[4].location.href="downloads.htm";
}

function about_us()
{
parent.parent.frames[4].location.href="about_us.htm";
}

function open_help(h) {
  var openhelp = window.open(h,'Help', 'height=480,width=580,scrollbars=yes,resizable=yes');
  var helpfocus = openhelp.focus();
  return helpfocus;
}