// JavaScript Document

var tab = {
 init: function(){
  var tabs = this.setup.tabs;
  var pages = this.setup.pages;
 
  for(i=0; i<pages.length; i++) {
   if(i !== 0) pages[i].style.display = 'none';
   tabs[i].onclick = function(){ tab.showpage(this); return false; };
  }
 },
 
 showpage: function(obj){
  var tabs = this.setup.tabs;
  var pages = this.setup.pages;
  var num;
 
  for(num=0; num<tabs.length; num++) {
   if(tabs[num] === obj) break;
  }
 
  for(var i=0; i<pages.length; i++) {
   if(i == num) {
    pages[num].style.display = 'block';
    tabs[num].className = 'present';
   }
   else{
    pages[i].style.display = 'none';
    tabs[i].className = null;
   }
  }
 }
}