I work for an ad-agency and I need to place a tracking pixel on a client's site to measure advertising performance and optimization. I wanted to use Qubit http://opentag.qubitproducts.com/index.html as that way I wouldn't have to keep going to the client to add and remove pixels plus it would also ensure that my traffic sources are not disclosed.

However the client told me that they don't allow Javascript pixel and instead asked for a 1x1 image pixel or an iframe.

Since Qubit doesn't offer an iframe pixel, I am trying to look for an alternative solution. Any thoughts or advice would be much appreciated.

Thank you