For me the bubble in front of the preview window ist broken. I found that the src is missing in the HTML Code.
To fix this is to change this.pointNode to Element "div" instead of "img". Then insert some innerHTML with html img.
// point
//this.pointNode = newNode("img");
this.pointNode = newNode("div");
this.pointNode.innerHTML = '
this.pointNode.className = "PV_point";
this.bubbleNode.appendChild(this.pointNode);

"Script was last updatedt on today" seems to be a function that evaluate today's date an display it on the website. Everyday I update my script but nothing happens. Why userscript.org uses a function to insert last update tag instead of using the real lastupdate date???

The custom images are broken images. Is there any error in the base64 ecoding?
I use it with greasemonkey 0.6.4 and Firefox 1.5 on win xp

Don't work with greasemonkey 0.6.4 and firefox 1.5