function showonlyone(thechosenone) {
		      var term = document.getElementsByTagName("span");
		            for(var x=0; x<term.length; x++) {
		                  name = term[x].getAttribute("name");
		                  if (name == 'term') {
		                        if (term[x].id == thechosenone) {
		                        term[x].style.display = 'block';
		                  }
		                  else {
		                        term[x].style.display = 'none';
		                  }
		            }
		      }
		}