docs: function convertTrees() {
  	setDefault("treeClass","mktree");
  	setDefault("nodeClosedClass","liClosed");
  	setDefault("nodeOpenClass","liOpen");
  	setDefault("nodeBulletClass","liBullet");
  	setDefault("nodeLinkClass","bullet");
  	setDefault("preProcessTrees",true);
  	if (preProcessTrees) {
  		if (!document.createElement) { return; } // Without createElement, we can't do anything
  		var uls = document.getElementsByTagName("ul");
  		if (uls==null) { return; }
  		var uls_length = uls.length;
  		for (var uli=0;uli<uls_length;uli++) {
  			var ul=uls[uli];
  			if (ul.nodeName=="UL" && ul.className==treeClass) {
  				processList(ul);
  				ul.setAttribute( "data-xdh-mktree", "handled" );
  			}
  		}
  	}
  }