Rendering Engines Benchmark

Ever since Maksim Orlovich released benchmarks of its excellent FrostByte flavour of the KJS engine, I've been curious to perform a synthetic benchmark of KHTML/KJS, to see what our whole stack is up to.

There would indeed be little point in having a smoking fast JavaScript engine if performance was going to fall apart at the next link of the chain, such as in DOM tree manipulation or Rendering, wouldn't it?