$(function()
{
	$.easing.elasout = function(x, t, b, c, d) {
		var s=1.70158;var p=0;var a=c;
		if (t==0) return b;  if ((t/=d)==1) return b+c;  if (!p) p=d*.3;
		if (a < Math.abs(c)) { a=c; var s=p/4; }
		else var s = p/(2*Math.PI) * Math.asin (c/a);
		return a*Math.pow(2,-10*t) * Math.sin( (t*d-s)*(2*Math.PI)/p ) + c + b;
	};

	$('a.back').click(function(){
		$('div.pane').scrollTo( 0, 800, { queue:true } );
		return false;
	});
	
	var $paneTarget = $('#pane-target');

	$.scrollTo(0);
	
	function reset_o(){
		$paneOptions.stop().stop();
		//$paneOptions[0].scrollLeft = $paneOptions[0].scrollTop = 0;
	};

	var $paneOptions = $('#treepanes');
	
	$('#question1n').click(function(){reset_o(); $paneOptions.scrollTo( 'li:eq(1)', 1000, {duration: 1000, onAfter:function(){$('#message').html('<img src="_images/step_24.gif" />');}}); return false; });
	$('#question2n').click(function(){reset_o(); $paneOptions.scrollTo( 'li:eq(2)', 1000, {duration: 1000, onAfter:function(){$('#message').html('<img src="_images/step_34.gif" />');}}); return false; });
	$('#question3n').click(function(){reset_o(); $paneOptions.scrollTo( 'li:eq(3)', 1000, {duration: 1000, onAfter:function(){$('#message').html('<img src="_images/step_44.gif" />');}}); return false; });
	$('#question4n').click(function(){reset_o(); $paneOptions.scrollTo( 'li:eq(4)', 1000, {duration: 1000, onAfter:function(){$('#message').html('<img src="_images/step_completed.gif" />');}}); return false; });

	//$('#question4n').click(function(){reset_o(); $paneOptions.scrollTo( 'li:eq(3)', 1000, {duration: 1000, onAfter:function(){$('#message').html('<img src="step_44.gif" />');}}); });

});