switch(document.location.href.split('/').slice(2,3)){
	case 'portfolio':
		var original_pos = '30';
		break;
	case 'articles':
		var original_pos = '150';
		break;
	case 'blog':
		var original_pos = '270';
		break;
	case 'about':
		var original_pos = '390';
		break;
	};