window.addEvent('domready',function(){
    var links = $$('a.v_toggle');
    var contents = $$('div.vertical_slide');
   
    contents.set('slide',{
        duration:600,
	//  removed due to IE8 error	
	//	transition:Fx.Transitions.Back.easeIn
    });
   
    contents.slide('hide');
 
    links.addEvent('click',function(e){
        e.stop();
        var index = links.indexOf(this);
        if(!contents.some(function(content,i){
            var slide = content.get('slide');
            if(slide.open && i != index){
                slide.slideOut().chain(function(){contents[index].slide('in')});
                return true;
            }
        })){
            var slide = contents[index].get('slide');
  			contents[index].slide((slide.open) ? 'out' : 'in');
        }
    });
});