var javawsInstalled = 0;
isIE = "false";

if (navigator.mimeTypes && navigator.mimeTypes.length) {
   x = navigator.mimeTypes['application/x-java-jnlp-file'];
   if (x) javawsInstalled = 1;
} else {
   isIE = "true";
}

function insertLink() {
 if (!javawsInstalled) {
      document.write("NOTE: you may need to <a href='http://java.com/en/download/'>install Java</a>!<BR>");
   }
}