function initialise(){
hidediv('cs1');
hidediv('cs2');
hidediv('cs3');
hidediv('cs4');
hidediv('cs5');
hidediv('cs6');
hidediv('cs7');
hidediv('cs8');
}
function hidediv(pass) {
   var l_item = document.getElementById (pass);

   if ( l_item == null )
   {
      alert ('Sorry.. there are problems with running JavaScript.');
      return;
   }else{
      l_item.style.display = 'none';
	}
 
}

function showdiv(pass) {
	initialise();
   var l_item = document.getElementById (pass);

   if ( l_item == null )
   {
      alert ('Sorry.. there are problems with running JavaScript.\n'+pass);
      return;
   }else{
      l_item.style.display = 'block';
    }
} 

function hidediv(pass) {
   var l_item = document.getElementById (pass);

   if ( l_item == null )
   {
      alert ('Sorry.. there are problems with runing JavaScript.');
      return;
   }else{
      l_item.style.display = 'none';
	}
 
}

function showdiv(pass) {
   var l_item = document.getElementById (pass);

   if ( l_item == null )
   {
      alert ('Sorry.. there are problems with runing JavaScript.\n'+pass);
      return;
   }else{
      l_item.style.display = 'block';
    }
}
function toglediv(pass){
   var l_item = document.getElementById (pass);

   if ( l_item == null )
   {
      alert ('Sorry.. there are problems with runing JavaScript.\n'+pass);
      return;
   }else{
		if(l_item.style.display == 'block'){
		    l_item.style.display = 'none';
		}
		else{
			l_item.style.display = 'block';
		}
    }
}