/*--setup--*/
window.onload=function() {
tab.setup = {
   tabs: parent.document.getElementById('tab').getElementsByTagName('li'),
			imgs: parent.document.getElementById('tab').getElementsByTagName('img'),
   pages: [
      parent.document.getElementById('tabs01'),
      parent.document.getElementById('tabs02'),
      parent.document.getElementById('tabs03'),
      parent.document.getElementById('tabs04')
   ]
}
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]./*onmouseover*/onclick = function(){ tab.showpage(this); return false; };
      }
   },
  
   showpage: function(obj){
      var tabs = this.setup.tabs;
      var pages = this.setup.pages;
						var imgs = this.setup.imgs;
      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 = 'selected';
												imgs[num].src = 'img/tab' + num + '_on.gif';
         }
         else{
            pages[i].style.display = 'none';
            tabs[i].className = null;
												imgs[i].src = 'img/tab' + i + '_off.gif';
         }
      }
   }
}