firegestures 画像検索スクリプト

var srcNode = FireGestures.sourceNode;
var imgURL = getComputedStyle(srcNode, '').getPropertyValue('background-image');

if (imgURL == 'none')
imgURL = FireGestures.getImageURL(srcNode);
else
imgURL = imgURL.replace(/"|'/g,"").replace(/url(|)$/ig, "");

if (!imgURL)
throw "Not on a image";

// check the URL is safe
FireGestures.checkURL(imgURL, srcNode.ownerDocument);

imgURL = 'http://www.google.com/searchbyimage?image_url='
+ encodeURIComponent(imgURL) + '&num=10'

// open image in new tab
var background = gPrefService.getBoolPref("browser.tabs.loadInBackground");
if (event.shiftKey || event.ctrlKey)
background = !background;
gBrowser.loadOneTab(imgURL, null, null, null, background, false);