var objHiddenScroller = document.getElementById('hiddenScroller');
var objHiddenHeight = objHiddenScroller.firstChild.offsetHeight;
var scrollerOpen = { 
   marginTop: { to: 0 } 
}; 
var scrollerClose = { 
   marginTop: { to: -objHiddenHeight } 
}; 
var animOpen = new YAHOO.util.Anim('contentExtras', scrollerOpen, 1, YAHOO.util.Easing.easeOut); 
var animClose = new YAHOO.util.Anim('contentExtras', scrollerClose, 1, YAHOO.util.Easing.easeOut); 

var objToggleDetails = document.getElementById('toggleDetails');
objToggleDetails.onclick = function() {
	if (objHiddenScroller.offsetHeight == 0) {
		detailsStatus = 'open';
		objToggleDetails.innerHTML = 'hide detail';
		animOpen.animate();
	} else {
		detailsStatus = 'closed';
		objToggleDetails.innerHTML = 'view detail';
	    animClose.animate();
	}
}