// usage: log('inside coolFunc', this, arguments);
// paulirish.com/2009/log-a-lightweight-wrapper-for-consolelog/
window.log = function(){
  log.history = log.history || [];   // store logs to an array for reference
  log.history.push(arguments);
  if(this.console) {
    arguments.callee = arguments.callee.caller;
    var newarr = [].slice.call(arguments);
    (typeof console.log === 'object' ? log.apply.call(console.log, console, newarr) : console.log.apply(console, newarr));
  }
};

// make it safe to use console.log always
(function(b){function c(){}for(var d="assert,count,debug,dir,dirxml,error,exception,group,groupCollapsed,groupEnd,info,log,timeStamp,profile,profileEnd,time,timeEnd,trace,warn".split(","),a;a=d.pop();){b[a]=b[a]||c}})((function(){try
{console.log();return window.console;}catch(err){return window.console={};}})());


// place any jQuery/helper plugins in here, instead of separate, slower script files.


//jQuery Noise
(function($){
// This function adds noise to the background-image attribute of a given element
$.fn.noisy = function(options) {
options = $.extend({}, $.fn.noisy.defaults, options);
var uri, localStorageSupported, cachedUri = false;

try {
localStorageSupported = 'localStorage' in window && window['localStorage'] !== null;
} catch (err) {
localStorageSupported = false;
}

if (window.JSON && localStorageSupported) {
cachedUri = localStorage.getItem(window.JSON.stringify(options));
}

// Use localStorage cache if these options have been used before
if (cachedUri) {
uri = cachedUri;
}
else {
var canvas = document.createElement('canvas');

// Use fallback image if canvas isn't supported
if (!canvas.getContext) {
uri = options.fallback;
}
else {
canvas.width = canvas.height = options.size;

var ctx = canvas.getContext('2d'),
imgData = ctx.createImageData(canvas.width, canvas.height),
numPixels = options.intensity * Math.pow(options.size, 2),
maxAlpha = 255 * options.opacity;

// Add color to random pixels in the canvas
while (numPixels--) { // Read about the double bitwise NOT trick here: goo.gl/6DPpt
var x = ~~(Math.random()*canvas.width),
y = ~~(Math.random()*canvas.height),
index = (x + y * imgData.width) * 4;

var colorChannel = numPixels % 255; // This will look random enough
imgData.data[index ] = colorChannel; // red
imgData.data[index+1] = options.monochrome ? colorChannel : ~~(Math.random()*255); // green
imgData.data[index+2] = options.monochrome ? colorChannel : ~~(Math.random()*255); // blue
imgData.data[index+3] = ~~(Math.random()*maxAlpha); // alpha
}

ctx.putImageData(imgData, 0, 0);
uri = canvas.toDataURL('image/png');

// In IE < 9 Data URI's are only displayed if they are < 32KB
// Though IE < 9 doesn't officially support the canvas element,
// certain scripts like excanvas.js will enable it and if the URI is > 32KB it won't be displayed
if (uri.indexOf('data:image/png') != 0 || // toDataURL doesn't return anything in Android 2.2
$.browser.msie &&
$.browser.version.substr(0,1) < 9 &&
uri.length > 32768) {
uri = options.fallback;
}
}

if (window.JSON && localStorageSupported) {
localStorage.setItem(window.JSON.stringify(options), uri);
}
}

return this.each(function() {
$(this).css('background-image', "url('" + uri + "')," + $(this).css('background-image'));
});
};
$.fn.noisy.defaults = {
// How many percent of the image that is filled with noise,
// represented by a number between 0 and 1 inclusive
intensity: 0.9,

// The width and height of the image in pixels
size: 200,

// The maximum noise particle opacity,
// represented by a number between 0 and 1 inclusive
opacity: 0.08,

// A string linking to the image used if there's no canvas support
fallback: '',

// Specifies wheter the particles are grayscale or colorful
monochrome: false
};
})(jQuery);