[webkit-dev] hit testing?

Hi, I'm wondering if webkit exposes any method to do a virtual hit testing via javascript. I'm looking to use some method like: function hittest(int x, int y) { for (all nodes in DOM) { return top-most node that gets intersected; } return null; } Not sure if this is the right place to asking, I cannot find information elsewhere. I'm targeting only safari which I believe uses webkit, so, I just wanted to know if any such functionality in the base might exist so a javascript function might exist, Thanks