gistfile1.js

var tomb = Components.classes['@brasil.to/tombloo-service;1'].getService().wrappedJSObject;
var ctx = _jsaCScript.context;
if(ctx.onImage){
	var src = ctx.target.src;
	var name = prompt('Source String');
} else {
	var name = trim(ctx.selection);
	var string = prompt('Destination String');
}

new tomb.Wedata.Item('Motsu', name, {
	image_url : src,
	string : string,
}).save();

// ----[Utility]-------------------------------------------------
function trim(str){
	return ('' + str).replace(/^\s+|\s+$/g, '');
}