function initialise(){
hidediv('cs1');
hidediv('cs2');
hidediv('cs3');
hidediv('cs4');
hidediv('cs5');
hidediv('cs6');
hidediv('cs7');
hidediv('cs8');
}
function showall(){
showdiv('cs1');
showdiv('cs2');
showdiv('cs3');
showdiv('cs4');
showdiv('cs5');
showdiv('cs6');
showdiv('cs7');
showdiv('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 showdivhide(pass) {
	initialise();
	showdiv(pass);
}
	
function showdiv(pass) {	
   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';
    }
}