/*
    Rewrite Google Image Search result
    links to point directly at the images
    Patrick Cavit, pcavit@gmail.com
    http://patcavit.com

    Copy, use, modify, spread as you see fit.
    Massive thanks go out to Eric Hamiter, this code
    is just a quick modification of his extesion at
    http://roachfiend.com/
*/

// ==UserScript==
// @name          Google Image Relinker
// @namespace     http://patcavit.com/greasemonkey
// @description	  Rewrites Google Image Search links to point straight to the pictures
// @include       *.google.com/images*
// ==/UserScript==

(function() 
{
	function selectNodes(doc, context, xpath) 
	{
	   var nodes = doc.evaluate(xpath, context, null, XPathResult.ORDERED_NODE_SNAPSHOT_TYPE, null);
	   var result = new Array( nodes.snapshotLength );
	   
	   for (var x=0; x<result.length; x++) 
	   {
	      result[x] = nodes.snapshotItem(x);
	   }
	   
	   return result;
	}
	
	doc = window.document;
	
	// Get a list of all A tags that have an href attribute containing the start and stop key strings.
   	var googLinks = selectNodes(doc, doc.body, "//A[contains(@href,'/imgres?imgurl=')][contains(@href,'&imgrefurl=')]");
   
	for (var x=0; x<googLinks.length; x++) 
	{
		// Capture the stuff between the start and stop key strings.
		var gimg = googLinks[x].href.match( /\/imgres\?imgurl\=(.*?)\&imgrefurl\=/ );
		var ghtml = googLinks[x].href.match( /\&imgrefurl\=(.*?)\&usg\=/ );
	
		// If it matched successfully...
		if (gimg)
		{
			// Replace the link's href with the contents of the text captured in the regular expression's parenthesis.
			googLinks[x].href = decodeURIComponent(gimg[1]);

			// Create link to original website
			anchorTag = document.createElement('a');
			anchorTag.href = decodeURIComponent(ghtml[1]);
			anchorTag.innerHTML = "<br />Website";
			if (googLinks[x].nextSibling)
				googLinks[x].parentNode.insertBefore(anchorTag, googLinks[x].nextSibling);
			else
				googLinks[x].parentNode.appendChild(anchorTag);
		}
	}
})();