[Deff]

Или даже так - покрасивше

$(document).ready(function(){
	var AnimateTime=500;
	var panelHeight = $("#panel .region-inner").height();
	var panelTop = panelHeight - 20;


	$('#btn-panel-slide').toggle(function () {
		$('#btn-panel-slide').addClass("active");
		$.cookie('cookie_panel_status', 'active', { expires: 7, path: '/' });
		$("#panel .region-inner").animate({top: 0 + "px"}, AnimateTime);

	   
	}, function() {

		$("#panel .region-inner").animate({top: "-" + panelTop + "px"}, AnimateTime);
		$('#btn-panel-slide').removeClass("active");
		$.cookie('cookie_panel_status', '', { expires: 7, path: '/' });
	});

	if (($.cookie('cookie_panel_status')) == 'active') {
		AnimateTime=1;
		$('#btn-panel-slide').addClass("active");
		$('#btn-panel-slide').click();
		AnimateTime=500;
	}
	else {
		$("#panel .region-inner").animate({top: "-" + panelTop + "px"}, 1);
	}
});