// JavaScript Document
 function viewContent(id,tag) { 
	  var elem = document.getElementById(""+tag+id);
	  elem.className = "ClassShow";
 }
 
 function hideContent(num, tag) {
	  for(i = 1; i <= num; i++) {
		 var elem = document.getElementById(""+tag+i);
		 elem.className = "ClassHide";
	  }
 }