<!-- browser detection adapted from code at netscape.com

var agt=navigator.userAgent.toLowerCase();
var isMajor  = parseInt(navigator.appVersion);

var isIE    = (agt.indexOf("msie") != -1);
var isIE4   = (isIE && (isMajor == 4) && (agt.indexOf("msie 5.0")==-1) ); 
var isIE4up = (isIE  && (isMajor >= 4));
var isAOL   = (agt.indexOf("aol") != -1);
var isAOL4  = (isAOL && isIE4);
var isOk    = (isIE4up || isAOL4);


function putUpButtons(whichBut)
{
   switch (whichBut)
   {
      case 1:
   document.write("<table><tr>");
   document.write("<button onclick=location.href='../index.html' Title ='Return to GrassBlade Home Page' Style='background-color: #00ffff; width: 125px; height: 25px;'><font color=#000000 face=Arial Bold>Home</font>");
   document.write("</tr><tr>");
   document.write("<button onclick=location.href='learning.html' Title='Return to The Learning Curve Home Page' Style='background-color: #00ffff; width: 125px; height: 25px;'><font color='#000000' face='Arial Bold'>The Learning Curve</font>");
   document.write("</tr></table>");
         break;
      case 2:
   document.write("<p align='center'>");
   document.write("<button onclick=location.href='#TF' Style='background-color: #ffffff; width: 100px; height: 25px;'><font color='#000000' face=Arial Bold>The Form</font>" +
     "<button onclick=location.href='#TA' Style='background-color: #ffffff; width: 100px; height: 25px;'>The Analysis</font>" +
      "<button onclick=location.href='#TC' Style='background-color: #ffffff; width: 100px; height: 25px;'>The Code</font>");
   document.write("</p>");
   break;
   }
}

//-- end of normal page js
