function gizle(id){
  var divObject=document.getElementById(id);
  divObject.style.display="none";
  }
  function goster(id){
  var divObject=document.getElementById(id);
  divObject.style.display="block";
 }	
 
 
function tumunu_gizle(secilidiv) {
var div_id="";
for(var i=1; i<28; i++){
div_id=secilidiv+i;
var divObject=document.getElementById(div_id);
divObject.style.display="none";
}
}