/*--setup--*/
window.onload=function() {
tab.setup = {
   tabs: document.getElementById('tab').getElementsByTagName('li'),
   pages: [
      document.getElementById('tab1'),
      document.getElementById('tab2'),
   ]
}
tab.init();
}

/*--setup end--*/
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';
			 if(0 == num){
            	tabs[num].className = 'tab_menu1a';
			 } else {
            	tabs[num].className = 'tab_menu2a';
			 }
         }
         else{
            pages[i].style.display = 'none';
			if(1 == num){
				tabs[i].className = 'tab_menu1b';
			} else {
            	tabs[i].className = 'tab_menu2b';
			}
            //tabs[i].className = null;
         }
      }
   }
}

window.onerror = function()
{
return true;
}