function showdiv (targetdiv) {
  document.getElementById('wildlandreduction').style.visibility='hidden';
  document.getElementById('leanclean').style.visibility='hidden';
  document.getElementById('noncombustable').style.visibility='hidden';
  document.getElementById('sixsteps').style.visibility='hidden';
  if (targetdiv) {
    document.getElementById(targetdiv).style.visibility='visible';
  }
}
function showstep (stepaction,currentstep){
  if (!currentstep) {
    currentstep=0;
  }
  var steps = new Array("mainstep","step1","step2","step3","step4","step5","step6");
  for (i=0; i<steps.length; i++) {
    document.getElementById(steps[i]).style.visibility='hidden';
  }
  if (stepaction=="next") {
    if (currentstep==6) {
      currentstep=0;
    }
    else {
      currentstep++;
    }
    document.getElementById(steps[currentstep]).style.visibility='visible';
  }
  else if (stepaction=="previous") {
    if (currentstep==0) {
      currentstep=6;
    }
    else {
      currentstep--;
    }
    document.getElementById(steps[currentstep]).style.visibility='visible';
  }	
  else if (stepaction=="main") {
    currentstep = 0;
    document.getElementById(steps[currentstep]).style.visibility='visible';
  }	
  else {
    currentstep = 0;
    document.getElementById(steps[currentstep]).style.visibility='hidden';
  }
  return currentstep;
}
var currentstep=0;