<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN"> <html> <head><title>span merging tests</title></head> <p> <span><span id="id1">1</span></span> </p> <p> <span id="id2_1"> <span id="id2_2"> 2 </span> </span> </p> <p> <span title="span1"> <span title="span2"> 3 </span> </span> </p> <p> <span title="span1" class="cl1"> <span title="span2" class="cl2"> 4 </span> </span> </p> <p> <span title="span1" onclick="g()"> <span title="span2" onclick="f()" id="id5"> 5 </span> </span> </p> <p> <span title="span1" onclick="g()"> <span> <span title="span2" onclick="f()" id="id6"> 6 </span> </span> </span> </p> </body> </html>