function showDiv(num)
{
 for(var id = 1;id<=11;id++)
 {
  var ss="about"+id;
  var nss="aboutnav"+id;
  if(id==num){
  try{document.getElementById(ss).style.display="block"}catch(e){}; 
  try{document.getElementById(nss).className="showDiv1"}catch(e){};
  }else{
  try{document.getElementById(ss).style.display="none"}catch(e){};
  try{document.getElementById(nss).className="showDiv2"}catch(e){};
  }
 }  
}

function NshowDiv(num)
{
 for(var id = 1;id<=4;id++)
 {
  var ss="Nabout"+id; 
  var nss="Naboutnav"+id;
  if(id==num){
  try{document.getElementById(ss).style.display="block"}catch(e){};
  try{document.getElementById(nss).className="showDiv3"}catch(e){};
  }else{
  try{document.getElementById(ss).style.display="none"}catch(e){}; 
  try{document.getElementById(nss).className="showDiv4"}catch(e){};
  }
 }  
}

function XshowDiv(num)
{
 for(var id = 1;id<=3;id++)
 {
  var ss="Xabout"+id; 
  var nss="Xaboutnav"+id;
  if(id==num){
  try{document.getElementById(ss).style.display="block"}catch(e){}; 
  try{document.getElementById(nss).className="STYLE13"}catch(e){};
  }else{
  try{document.getElementById(ss).style.display="none"}catch(e){};
  try{document.getElementById(nss).className="STYLE14"}catch(e){};
  }
 }  
}


function ErshowDiv(num)
{
 for(var id = 1;id<6;id++)
 {
  var ss="Erabout"+id; 
  var nss="Eraboutnav"+id;
  if(id==num){
  try{document.getElementById(ss).style.display="block"}catch(e){};
  try{document.getElementById(nss).className="STYLE1red"}catch(e){};
  }else{
  try{document.getElementById(ss).style.display="none"}catch(e){}; 
  try{document.getElementById(nss).className="STYLE1"}catch(e){};
  }
 }  
}