IE V.S Mozilla (DHTML && CSS)

o={ 
  foo: function(){ 
    alert("never-online"); 
  } 
}; 
with (o) {
  bar();
  function bar(){ 
    alert("never-online");
  } 
  foo(); 
}

脚本顺序执行。
o={ 
  foo: function(){ 
    alert("never-online"); 
  } 
}; 
with (o) {
  bar();
  function bar(){ 
    alert("never-online");
  } 
  foo(); 
}

HTMLElement.prototype.__defineGetter__("parentElement", 
function () {
if (this.parentNode == this.ownerDocument) return null;
return this.parentNode;
});

  var notspace = /\S/;
  function cleanWhitespace(node) {
    for (var x=0; x<node.childNodes.length; x++) {
      var child = node.childNodes[x];
      if ((child.nodeType == 3) && (!notspace.test(child.nodeValue))) {
        node.removeChild(node.childNodes[x]); x--;
      }; if(child.nodeType == 1) { cleanWhitespace(child); }
    }
  }