function service_builder()
{
var build=document.getElementById('builder');
var agents=document.getElementById('agent');
var landlords=document.getElementById('landlord');

 if(build.style.display=='none')
 {
  build.style.display='';
  agents.style.display='none';
 landlords.style.display='none';
 }
 else 
  build.style.display='none';
 
   
}

function service_agent()
{

var build=document.getElementById('builder');
var agents=document.getElementById('agent');
var landlords=document.getElementById('landlord');


if(agents.style.display=='none')
  {
     agents.style.display='';
      build.style.display='none';
      landlords.style.display='none';
  }
  else 
  agents.style.display='none';
}
function service_landlord()
{
var build=document.getElementById('builder');
var agents=document.getElementById('agent');
var landlords=document.getElementById('landlord');

if(landlords.style.display=='none')
  {
  landlords.style.display='';
  build.style.display='none';
  agents.style.display='none';
 }
 else 
  landlords.style.display='none';
}