window.addEvent('domready', function()
{	
	//set the default tab  // if you choose tab1  you must also set  link1
	activeTab = 'tab_link1';
	activeLink = 'link1';
		
var initialise=$(activeTab).setStyles({display:'block',opacity:0});new Fx.Style(initialise,'opacity',{duration:1}).set(1);$(activeLink).className="active";$('tab-nav').getElements('a').addEvent('click',function(e){new Event(e).stop();$(activeLink).className="";this.className="active";activeLink=this.id;var newTab="tab_"+this.id;transitionTabs(activeTab,newTab)})});function transitionTabs(oldTab,newTab){var fadeOut=function(){var div=$(oldTab).setStyles({opacity:1});new Fx.Style(div,'opacity',{duration:700}).start(0);fadeIn()};var fadeIn=function(){var div2=$(newTab).setStyles({display:'block',opacity:0});new Fx.Style(div2,'opacity',{duration:700}).start(1)};if(newTab!=activeTab){fadeOut();activeTab=newTab}}