var state = 'block';
var state2 = 'none';

function showhide(layer_ref, hid_ref, hid_ref2, hid_ref3, hid_ref4) {

if (document.all) { //IS IE 4 or 5 (or 6 beta) 
eval( "document.all." + layer_ref + ".style.display = state"); 
eval( "document.all." + hid_ref + ".style.display = state2"); 
eval( "document.all." + hid_ref2 + ".style.display = state2");
eval( "document.all." + hid_ref3 + ".style.display = state2");
eval( "document.all." + hid_ref4 + ".style.display = state2");
} 

if (document.layers) { //IS NETSCAPE 4 or below 
document.layers[layer_ref].display = state; 
document.layers[hid_ref].display = state2; 
document.layers[hid_ref2].display = state2;
document.layers[hid_ref3].display = state2;
document.layers[hid_ref4].display = state2;
} 

if (document.getElementById &&!document.all) { 
hza = document.getElementById(layer_ref); 
hza.style.display = state;
hza = document.getElementById(hid_ref); 
hza.style.display = state2;
hza = document.getElementById(hid_ref2); 
hza.style.display = state2;
hza = document.getElementById(hid_ref3); 
hza.style.display = state2;
hza = document.getElementById(hid_ref4); 
hza.style.display = state2; 
} 

}
function showleadership() {
  document.getElementById("private").style.display = "none";
  document.getElementById("business").style.display = "none";
  document.getElementById("performance").style.display = "none";
  document.getElementById("leadership").style.display = "block";
  document.getElementById("nlp").style.display = "none";
  document.getElementById("leadershiplink").style.fontWeight = "bold";
    document.getElementById("nlplink").style.fontWeight = "normal";
    setTimeout ("showprivate()", 7500);
}

function showprivate() {
  document.getElementById("private").style.display = "block";
  document.getElementById("business").style.display = "none";
  document.getElementById("performance").style.display = "none";
  document.getElementById("leadership").style.display = "none";
  document.getElementById("nlp").style.display = "none";
  document.getElementById("privatelink").style.fontWeight = "bold";
  document.getElementById("leadershiplink").style.fontWeight = "normal";
  setTimeout ("showbusiness()", 7500);
}

function showbusiness() {
  document.getElementById("private").style.display = "none";
  document.getElementById("business").style.display = "block";
  document.getElementById("performance").style.display = "none";
  document.getElementById("leadership").style.display = "none";
  document.getElementById("nlp").style.display = "none";
   document.getElementById("privatelink").style.fontWeight = "normal";
  document.getElementById("businesslink").style.fontWeight = "bold";
  setTimeout ("showperformance()", 7500);
}

function showperformance() {
  document.getElementById("private").style.display = "none";
  document.getElementById("business").style.display = "none";
  document.getElementById("performance").style.display = "block";
  document.getElementById("leadership").style.display = "none";
  document.getElementById("nlp").style.display = "none";
  document.getElementById("performancelink").style.fontWeight = "bold";
  document.getElementById("businesslink").style.fontWeight = "normal";
  setTimeout ("shownlp()", 7500);
}

function shownlp() {
  document.getElementById("private").style.display = "none";
  document.getElementById("business").style.display = "none";
  document.getElementById("performance").style.display = "none";
  document.getElementById("leadership").style.display = "none";
  document.getElementById("nlp").style.display = "block";
  document.getElementById("nlplink").style.fontWeight = "bold";
  document.getElementById("performancelink").style.fontWeight = "normal";
  setTimeout ("showleadership()", 7500);
}