function change1()
  {
  document.getElementById("link1").style.backgroundImage="url(images/tab-over.gif)";
  document.getElementById("link2").style.backgroundImage="url(images/tab.gif)";
  document.getElementById("link3").style.backgroundImage="url(images/tab.gif)";
  document.getElementById("link4").style.backgroundImage="url(images/tab.gif)";
  document.getElementById("link5").style.backgroundImage="url(images/tab.gif)";
  document.getElementById("link6").style.backgroundImage="url(images/tab.gif)";
  
  document.getElementById("box1").style.display = "block";
  document.getElementById("box2").style.display = "none";
  document.getElementById("box3").style.display = "none";
  document.getElementById("box4").style.display = "none";
  document.getElementById("box5").style.display = "none";
  document.getElementById("box6").style.display = "none";
  
document.getElementById("link1a").className="menugreywhite"; 
document.getElementById("link2a").className="menugrey"; 
document.getElementById("link3a").className="menugrey"; 
document.getElementById("link4a").className="menugrey"; 
document.getElementById("link5a").className="menugrey"; 
document.getElementById("link6a").className="menugrey"; 
  }
function change2()
  {
  document.getElementById("link1").style.backgroundImage="url(images/tab.gif)";
  document.getElementById("link2").style.backgroundImage="url(images/tab-over.gif)";
  document.getElementById("link3").style.backgroundImage="url(images/tab.gif)";
  document.getElementById("link4").style.backgroundImage="url(images/tab.gif)";
  document.getElementById("link5").style.backgroundImage="url(images/tab.gif)";
  document.getElementById("link6").style.backgroundImage="url(images/tab.gif)";
  
  document.getElementById("box1").style.display = "none";
  document.getElementById("box2").style.display = "block";
  document.getElementById("box3").style.display = "none";
  document.getElementById("box4").style.display = "none";
  document.getElementById("box5").style.display = "none";
  document.getElementById("box6").style.display = "none";
  
document.getElementById("link1a").className="menugrey"; 
document.getElementById("link2a").className="menugreywhite"; 
document.getElementById("link3a").className="menugrey"; 
document.getElementById("link4a").className="menugrey"; 
document.getElementById("link5a").className="menugrey"; 
document.getElementById("link6a").className="menugrey"; 
  }
function change3()
  {
  document.getElementById("link1").style.backgroundImage="url(images/tab.gif)";
  document.getElementById("link2").style.backgroundImage="url(images/tab.gif)";
  document.getElementById("link3").style.backgroundImage="url(images/tab-over.gif)";
  document.getElementById("link4").style.backgroundImage="url(images/tab.gif)";
  document.getElementById("link5").style.backgroundImage="url(images/tab.gif)";
  document.getElementById("link6").style.backgroundImage="url(images/tab.gif)";
  
  document.getElementById("box1").style.display = "none";
  document.getElementById("box2").style.display = "none";
  document.getElementById("box3").style.display = "block";
  document.getElementById("box4").style.display = "none";
  document.getElementById("box5").style.display = "none";
  document.getElementById("box6").style.display = "none";
  
  document.getElementById("link1a").className="menugrey"; 
document.getElementById("link2a").className="menugrey"; 
document.getElementById("link3a").className="menugreywhite"; 
document.getElementById("link4a").className="menugrey"; 
document.getElementById("link5a").className="menugrey"; 
document.getElementById("link6a").className="menugrey"; 
  }
function change4()
  {
  document.getElementById("link1").style.backgroundImage="url(images/tab.gif)";
  document.getElementById("link2").style.backgroundImage="url(images/tab.gif)";
  document.getElementById("link3").style.backgroundImage="url(images/tab.gif)";
  document.getElementById("link4").style.backgroundImage="url(images/tab-over.gif)";
  document.getElementById("link5").style.backgroundImage="url(images/tab.gif)";
  document.getElementById("link6").style.backgroundImage="url(images/tab.gif)";
  
  document.getElementById("box1").style.display = "none";
  document.getElementById("box2").style.display = "none";
  document.getElementById("box3").style.display = "none";
  document.getElementById("box4").style.display = "block";
  document.getElementById("box5").style.display = "none";
  document.getElementById("box6").style.display = "none";
  
  document.getElementById("link1a").className="menugrey"; 
document.getElementById("link2a").className="menugrey"; 
document.getElementById("link3a").className="menugrey"; 
document.getElementById("link4a").className="menugreywhite"; 
document.getElementById("link5a").className="menugrey"; 
document.getElementById("link6a").className="menugrey"; 
  }
function change5()
  {
  document.getElementById("link1").style.backgroundImage="url(images/tab.gif)";
  document.getElementById("link2").style.backgroundImage="url(images/tab.gif)";
  document.getElementById("link3").style.backgroundImage="url(images/tab.gif)";
  document.getElementById("link4").style.backgroundImage="url(images/tab.gif)";
  document.getElementById("link5").style.backgroundImage="url(images/tab-over.gif)";
  document.getElementById("link6").style.backgroundImage="url(images/tab.gif)";
  
  document.getElementById("box1").style.display = "none";
  document.getElementById("box2").style.display = "none";
  document.getElementById("box3").style.display = "none";
  document.getElementById("box4").style.display = "none";
  document.getElementById("box5").style.display = "block";
  document.getElementById("box6").style.display = "none";
  
  document.getElementById("link1a").className="menugrey"; 
document.getElementById("link2a").className="menugrey"; 
document.getElementById("link3a").className="menugrey"; 
document.getElementById("link4a").className="menugrey"; 
document.getElementById("link5a").className="menugreywhite"; 
document.getElementById("link6a").className="menugrey"; 
  }
function change6()
  {
  document.getElementById("link1").style.backgroundImage="url(images/tab.gif)";
  document.getElementById("link2").style.backgroundImage="url(images/tab.gif)";
  document.getElementById("link3").style.backgroundImage="url(images/tab.gif)";
  document.getElementById("link4").style.backgroundImage="url(images/tab.gif)";
  document.getElementById("link5").style.backgroundImage="url(images/tab.gif)";
  document.getElementById("link6").style.backgroundImage="url(images/tab-over.gif)";
  
  document.getElementById("box1").style.display = "none";
  document.getElementById("box2").style.display = "none";
  document.getElementById("box3").style.display = "none";
  document.getElementById("box4").style.display = "none";
  document.getElementById("box5").style.display = "none";
  document.getElementById("box6").style.display = "block";
  
  document.getElementById("link1a").className="menugrey"; 
document.getElementById("link2a").className="menugrey"; 
document.getElementById("link3a").className="menugrey"; 
document.getElementById("link4a").className="menugrey"; 
document.getElementById("link5a").className="menugrey"; 
document.getElementById("link6a").className="menugreywhite"; 
  }