YAHOO.namespace('TGN.anim');
YAHOO.TGN.anim.init = function() {
	var isOpen = false;
	var expandAnim = new YAHOO.util.Anim('moveSY', { top: {from: 220, to:8} }, 0.2 );
	var collapseAnim = new YAHOO.util.Anim('moveSY', { top: {from: 8, to:220} }, 0.2 );
	var doTransition = function(e) {
		if (isOpen) {
	        YAHOO.util.Dom.setStyle('clickSY', 'background-position', 'top left');
			collapseAnim.animate();
			isOpen = false;
		} else {
	        YAHOO.util.Dom.setStyle('clickSY', 'background-position', 'bottom left');
			expandAnim.animate();
			isOpen = true;
		}
		return false;
	}	
	YAHOO.util.Event.addListener('clickSY', 'click', doTransition);
}
YAHOO.util.Event.addListener(window, 'load', YAHOO.TGN.anim.init);