/**
 * grid.js
 * Copyright (c) 2010 Antti-Jussi Kovalainen
 *
 * A simple 960 Grid overlay
 */

$(document).ready(function () {
	var altDown = false;
	
	$('body').append('<div id="gridOverlay" style="background:transparent url(http://ajk.im/wordpress/wp-content/themes/v3/img/960-24-2.png) repeat-y center top;display:none;position:fixed;top:0;height:100%;width:100%;">&nbsp;</div>');
	
	$(document).keydown(function(event) {
		if (event.keyCode == 18) {
			altDown = true;
		}
		else if (event.keyCode == 71 && altDown) {
			$('#gridOverlay').toggle();
		}
	});
	
	$(document).keyup(function(event) {
		if (event.keyCode == 18) {
			altDown = false;
		}
	});
	
});