Bookmarklet to toggle transparent black veil over current interface

remote-loaded-drawVeil.js

// *Usage*
// Include the following as a bookmark:
// javascript: var gistSrc = "https://raw.github.com/gist/4022488/d8b31cf4fb663ce2b1afee89f3bd6bf72479c10c/quick-veil.js";console.log("Toggling veil, please wait...");function loadScript(src, optionalCallback) {	var s = document.createElement("script");	s.type = "text/javascript";	s.src = src;	var context = document.getElementsByTagName('script')[0];	context.parentNode.insertBefore(s, context);	s.async = true;	s.addEventListener('load', optionalCallback);}if(typeof veil_liev !== "undefined" && veil_liev) {	jQuery("#veil-liev").stop().fadeTo(250, 0, function() {		console.log("Veil lifted.");		veil_liev = false;		jQuery("#veil-liev").remove();	});} else {	function afterLoadScript() {		drawVeil(0.65, function(v) {			veil = v;			console.log("Veil dropped.");			veil_liev = true;		});	}	if(typeof veil_liev !== "undefined") {		afterLoadScript();	} else {		loadScript(gistSrc, afterLoadScript);	}}


// Source:
var gistSrc = "https://raw.github.com/gist/4022488/d8b31cf4fb663ce2b1afee89f3bd6bf72479c10c/quick-veil.js";
console.log("Toggling veil, please wait...");

function loadScript(src, optionalCallback) {
	var s = document.createElement("script");
	s.type = "text/javascript";
	s.src = src;
	var context = document.getElementsByTagName('script')[0];
	context.parentNode.insertBefore(s, context);
	s.async = true;
	s.addEventListener('load', optionalCallback);
}
if(typeof veil_liev !== "undefined" && veil_liev) {
	jQuery("#veil-liev").stop().fadeTo(250, 0, function() {
		console.log("Veil lifted.");
		veil_liev = false;
		jQuery("#veil-liev").remove();
	});
} else {
	function afterLoadScript() {
		drawVeil(0.65, function(v) {
			veil = v;
			console.log("Veil dropped.");
			veil_liev = true;
		});
	}
	if(typeof veil_liev !== "undefined") {
		afterLoadScript();
	} else {
		loadScript(gistSrc, afterLoadScript);
	}
}

Before:

After: