cortonaLocation = "http://www.parallelgraphics.com/products/cortona/download";
confirmMessage = "You must use the Cortona VRML Client.\nDownload it now?";

function cortonaClient() {
  location.href = cortonaLocation;
}

function vrmlMessage() {
  document.write('<font size="1">');
  document.write('<p><b>These 3D models are built using Virtual Reality Modeling Language (VRML). ');
  document.write('You must use the VRML browser plugin from <A HREF="javascript:cortonaClient()">');
  document.write('Cortona</a> to view the models. Other VRML browsers will not work properly. ');
  document.write('A high performance PC, minimum 800 MHz Pentium-class, is recommended to enjoy the experience.</b></p>');
  document.write('</font>');
}

function windowsMessage() {
  document.write('<font size="1">');
  document.write('<p><b>Since you are not using Microsoft Windows operating system, ');
  document.write('commentary will not be available during the 3D presentation.</b></p>');
  document.write('</font>');
}

function browserMessage() {
  document.write('<font size="1">');
  document.write('<p><b>Since you are not using Microsoft Internet Explorer version 5.0 or above, ');
  document.write('commentary will not be available during the 3D presentation.</b></p>');
  document.write('</font>');
}

function poweredMessage() {
  document.write('<font size="1">');
  document.write('Powered by Internet Explorer and <A HREF="javascript:cortonaClient()">Cortona</a>.');
  document.write('</font>');
}