x_win.js

《Ajax 实战》中文（有源码）详细简介了ajax

// x_win.js, part of X, a Cross-Browser.com Javascript Library
// Copyright (C) 2001,2002,2003,2004,2005 Michael Foster - Distributed under the terms of the GNU LGPL - OSI Certified
// File Rev: 3

// xWindow Object Prototype

function xWindow(name, w, h, x, y, loc, men, res, scr, sta, too)
{
  var e='',c=',',xf='left=',yf='top='; this.n = name;
  if (document.layers) {xf='screenX='; yf='screenY=';}
  this.f = (w?'width='+w+c:e)+(h?'height='+h+c:e)+(x>=0?xf+x+c:e)+
    (y>=0?yf+y+c:e)+'location='+loc+',menubar='+men+',resizable='+res+
    ',scrollbars='+scr+',status='+sta+',toolbar='+too;
  this.opened = function() {return this.w && !this.w.closed;};
  this.close = function() {if(this.opened()) this.w.close();};
  this.focus = function() {if(this.opened()) this.w.focus();};
  this.load = function(sUrl) {
    if (this.opened()) this.w.location.href = sUrl;
    else this.w = window.open(sUrl,this.n,this.f);
    this.focus();
    return false;
  };
}

// xWinClass Object Prototype
// can't be called before onload

function xWinClass(clsName, winName, w, h, x, y, loc, men, res, scr, sta, too)
{
  var thisObj = this;
  var e='',c=',',xf='left=',yf='top='; this.n = name;
  if (document.layers) {xf='screenX='; yf='screenY=';}
  this.f = (w?'width='+w+c:e)+(h?'height='+h+c:e)+(x>=0?xf+x+c:e)+
    (y>=0?yf+y+c:e)+'location='+loc+',menubar='+men+',resizable='+res+
    ',scrollbars='+scr+',status='+sta+',toolbar='+too;
  this.opened = function() {return this.w && !this.w.closed;};
  this.close = function() {if(this.opened()) this.w.close();};
  this.focus = function() {if(this.opened()) this.w.focus();};
  this.load = function(sUrl) {
    if (this.opened()) this.w.location.href = sUrl;
    else this.w = window.open(sUrl,this.n,this.f);
    this.focus();
    return false;
  };
  // Closures
  // this == <A> element reference, thisObj == xWinClass object reference
  function onClick() {return thisObj.load(this.href);}
  // '*' works with any element, not just A
  xGetElementsByClassName(clsName, document, '*', bindOnClick);
  function bindOnClick(e) {e.onclick = onClick;}
}

// xWinOpen()
// A simple alternative to xWindow.
var xChildWindow = null;
function xWinOpen(sUrl)
{
  var features = "left=0,top=0,width=600,height=500,location=0,menubar=0," +
    "resizable=1,scrollbars=1,status=0,toolbar=0";
  if (xChildWindow && !xChildWindow.closed) {xChildWindow.location.href  = sUrl;}
  else {xChildWindow = window.open(sUrl, "myWinName", features);}
  xChildWindow.focus();
  return false;
}

// xWinScrollTo

var xWinScrollWin = null;
function xWinScrollTo(win,x,y,uTime) {
  var e = win;
  if (!e.timeout) e.timeout = 25;
  var st = xScrollTop(e, 1);
  var sl = xScrollLeft(e, 1);
  e.xTarget = x; e.yTarget = y; e.slideTime = uTime; e.stop = false;
  e.yA = e.yTarget - st;
  e.xA = e.xTarget - sl; // A = distance
  e.B = Math.PI / (2 * e.slideTime); // B = period
  e.yD = st;
  e.xD = sl; // D = initial position
  var d = new Date(); e.C = d.getTime();
  if (!e.moving) {
    xWinScrollWin = e;
    xWinScroll();
  }
}
function xWinScroll() {
  var e = xWinScrollWin || window;
  var now, s, t, newY, newX;
  now = new Date();
  t = now.getTime() - e.C;
  if (e.stop) { e.moving = false; }
  else if (t < e.slideTime) {
    setTimeout("xWinScroll()", e.timeout);
    s = Math.sin(e.B * t);
    newX = Math.round(e.xA * s + e.xD);
    newY = Math.round(e.yA * s + e.yD);
    e.scrollTo(newX, newY);
    e.moving = true;
  }  
  else {
    e.scrollTo(e.xTarget, e.yTarget);
    xWinScrollWin = null;
    e.moving = false;
  }  
}