非常不错的一个javascript类_javascript技巧

/*
* Author:aoao
* Homepage:http://www.loaoao.com
* Email:loaoao@gmail.com / QQ:2222342
* Copyright (c) 2006 aoao
* Licensed under a Creative Commons Attribution 2.5 License (http://creativecommons.org/licenses/by/2.5/)
*/

var jscc = new Object();
var loaoao = new Object();//^_^//
jscc = {
init:function(){/*_*/},
path:"/scripts/jscc/",
include:function (file){
var j=document.createElement("script");
j.setAttribute('type','text/javascript');
j.setAttribute('src',jscc.path+file+'.js');
document.getElementsByTagName("head")[0].appendChild(j);
}
};

jscc.addEvent = function( obj, type, fn ) {
if ( obj.attachEvent ) {
obj['e'+type+fn] = fn;
obj[type+fn] = function(){obj['e'+type+fn]( window.event );}
obj.attachEvent( 'on'+type, obj[type+fn] );
} else {
obj.addEventListener( type, fn, false );
}
};
// Cookies
jscc.cookie = {
create:function (name,value,days) {
if (days) {
var date = new Date();
date.setTime(date.getTime()+(days*24*60*60*1000));
var expires = "; expires="+date.toGMTString();
}
else expires = "";
document.cookie = name+"="+value+expires+"; path=/";
},
read:function(name) {
var nameEQ = name + "=";
var ca = document.cookie.split(';');
for(var i=0;i < ca.length;i++) {
var c = ca[i];
while (c.charAt(0)==' ') c = c.substring(1,c.length);
if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
}
return null;
}
};


jscc.getPageSize=function(){
// reference lightbox (http://www.huddletogether.com/projects/lightbox/lightbox.js)
var theWidth,theHeight;
if (window.innerHeight&&window.scrollMaxY) {
theWidth = window.innerWidth;
theHeight = window.innerHeight+ window.scrollMaxY;
}
else if (document.body){
theWidth=((document.body.scrollWidth > document.body.offsetWidth)?document.body.scrollWidth : document.body.offsetWidth );
theHeight=((document.body.scrollHeight > document.body.offsetHeight)?document.body.scrollHeight : document.body.offsetHeight );
}
var winWidth ,winHeight;
if (self.innerHeight) {
winWidth = self.innerWidth;
winHeight = self.innerHeight;
} else if (document.documentElement && document.documentElement.clientHeight) {
winWidth = document.documentElement.clientWidth;
winHeight = document.documentElement.clientHeight;
} else if (document.body) {
winWidth = document.body.clientWidth;
winHeight = document.body.clientHeight;
}
var pWidth=(theWidth>winWidth?theWidth:winWidth)
var pHeight=(theHeight>winHeight?theHeight:winHeight)

var yScroll;
if (self.pageYOffset) {
yScroll = self.pageYOffset;
} else if (document.documentElement && document.documentElement.scrollTop){ // Explorer 6 Strict
yScroll = document.documentElement.scrollTop;
} else if (document.body) {// all other Explorers
yScroll = document.body.scrollTop;
}
var getPageSize = new Array(pWidth,pHeight,winWidth,winHeight,yScroll)
return getPageSize;
}


jscc.widgets = {/**/};
jscc.widgets.fixedsidebar = {
fixedHeight:0,
oldScrolltop:0,
init: function(){
if (!document.getElementById("sidebar")) return;
jscc.addEvent(window,"scroll",function(e){jscc.widgets.fixedsidebar.setFixed()});
jscc.addEvent(window,"resize",function(e){jscc.widgets.fixedsidebar.setFixed()});
this.fixedHeight=document.getElementById("sidebar").offsetTop;
this.setFixed();
},
setFixed:function(){
var sidebar=document.getElementById("sidebar");
var ref=document.getElementById("main");
var s_t=sidebar.offsetTop;
var s_h=sidebar.offsetHeight;
var s_th=s_t+s_h;
var r_th=ref.offsetTop+ref.offsetHeight;
var d_st;
if(document.documentElement.scrollTop){
d_st=document.documentElement.scrollTop;
}
else{
d_st=document.body.scrollTop
}
if(r_th>(s_t+s_h)){
var seHeight=0;
if (self.innerHeight) { seHeight = self.innerHeight;} else if (document.documentElement && document.documentElement.clientHeight) { seHeight = document.documentElement.clientHeight;} else if (document.body) {seHeight = document.body.clientHeight;}
try{
if(seHeight>s_h){
var newtop=(d_st<this.fixedHeight?0:d_st-this.fixedHeight-42);
}
else{
// Thank you dron (http://www.ucren.com/)
switch (d_st-this.oldScrolltop>0)
{
case true:
if (d_st-this.fixedHeight > s_t -seHeight){
var newtop= d_st -this.fixedHeight - (s_h-seHeight)-68;
}
break;
case false:
if (d_st-this.fixedHeight<parseInt(sidebar.style.marginTop,10)){
var newtop= d_st-this.fixedHeight;
}
break;
}
}
this.oldScrolltop = d_st;
if(newtop==undefined){ return;};
newtop=(newtop<0?0:newtop);
sidebar.style.marginTop= newtop+"px";
}
catch(e){
//alert(e.description);
}
}
else{
sidebar.style.marginTop="0px";
}
}
};
//jscc.addEvent(window,"load",function(e){jscc.widgets.fixedsidebar.init()});

jscc.widgets.wraphandler = {
//jscc.widgets.wraphandler reference http://www.collylogic.com/includes/resizer.js (http://www.collylogic.com/?/comments/redesign-notes-1-width-based-layout/)
init: function() {
//if (!document.getElementById) return;
if( document.getElementById('wrapper').className=="col3"){
jscc.wraphandler.setWrapper();
jscc.addEvent(window,"resize",jscc.wraphandler.setWrapper);
}
else{return}
},
setWrapper: function() {
var getPS=jscc.getPageSize();
var _width=getPS[2];
if (_width < 940) {
document.getElementById('wrapper').className = 'col2';
} else {
document.getElementById('wrapper').className = 'col3';
}
if(document.all) {
if (_width < 780) {
document.getElementById('wrapper').style.width="750px"
} else {
document.getElementById('wrapper').style.width="auto"
}
}
}
};
//jscc.addEvent(window,"load",function(e){jscc.widgets.wraphandler.init()});


jscc.widgets.styleSwitcher = {
// jscc.widgets.styleSwitcher reference StyleSwitcher functions( written by Paul Sowden http://www.idontsmoke.co.uk/ss/ . For the details, visit ALA: http://www.alistapart.com/stories/alternate/)
init:function(e) {
var cookie = jscc.cookie.read("style");
var title = cookie ? cookie : this.getPreferred();
title = (title==null?"left":title);
this.setActive(title);
var operactioner = document.getElementById("themes").getElementsByTagName("A");
operactioner[0].onclick=function() {
jscc.widgets.styleSwitcher.setActive("left");
return false;
};
operactioner[1].onclick=function() {
jscc.widgets.styleSwitcher.setActive("right");
return false;
};
this.switcher(title);
},
setActive:function(title){
var i, a, main;
for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title")) {
a.disabled = true;
if(a.getAttribute("title") == title) a.disabled = false;
}
}
this.switcher(title);
//jscc.cookie.create("style", title,"365");
},
getActive:function(){
var i, a;
for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title") && !a.disabled) return a.getAttribute("title");}
return null;
},
getPreferred:function (){
var i, a;
for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
if(a.getAttribute("rel").indexOf("style") != -1
&& a.getAttribute("rel").indexOf("alt") == -1
&& a.getAttribute("title")
) return a.getAttribute("title");
}
return null;
},
switcher:function(theme){
if(!document.getElementById(["theme_"+theme])) { return;}
var notheme=(theme=="left"?"right":"left");
document.getElementById(["theme_"+notheme]).style.display="inline";
document.getElementById(["theme_"+theme]).style.display="none";
},
end:function(e){
var title = this.getActive();
jscc.cookie.create("style", title,"365");
}
};
//jscc.addEvent(window,"load",function(e){jscc.widgets.styleSwitcher.init()});
jscc.addEvent(window,"unload",function(e){jscc.widgets.styleSwitcher.end()});

jscc.widgets.toTop = {
init:function(){
document.getElementById("toTop").onclick=function(e){
jscc.widgets.toTop.set();
return false;
}
},
waitTimer:null,
set:function(){
var d_st=document.documentElement.scrollTop;
if(window.navigator.userAgent.indexOf("MSIE")>=1){
for (var i=d_st; i>10; i-=Math.floor(i/6)){
window.scrollTo(0,i);
}
window.scrollTo(0,10);
}
else{
window.scrollTo(0,Math.floor(d_st / 2));

if(d_st>10){
waitTimer=setTimeout("jscc.widgets.toTop.set()",20);
}
else{
clearTimeout(waitTimer);
}
}
}
}
jscc.api={
google:{
init:function(){
try{
var searchControl = new GSearchControl();
}
catch(e){
return;
}

var options = new GdrawOptions();
options.setSearchFormRoot(document.getElementById("googleSearchForm"));
options.setDrawMode(GSearchControl.DRAW_MODE_TABBED);
searchControl.setLinkTarget(GSearch.LINK_TARGET_SELF);
searchControl.setResultSetSize(GSearch.LARGE_RESULTSET);

var siteSearch = new GwebSearch();
siteSearch.setUserDefinedLabel("站内搜索");
siteSearch.setUserDefinedClassSuffix("siteSearch");
siteSearch.setSiteRestriction("www.loaoao.com");
searchControl.addSearcher(siteSearch);
var labSearch = new GwebSearch();
labSearch.setUserDefinedLabel("嗷嗷的实验室搜索");
labSearch.setUserDefinedClassSuffix("labSearch");
labSearch.setSiteRestriction("lab.loaoao.com");
searchControl.addSearcher(labSearch);
var wwwSearch = new GwebSearch();
wwwSearch.setUserDefinedLabel("Google搜索");
labSearch.setUserDefinedClassSuffix("wwwSearch");
searchControl.addSearcher(wwwSearch);

searchControl.draw(document.getElementById("googleSearchResults"), options);
// searchControl.execute("css");
}
}
}
loaoao.com = function(){
if (!document.getElementById) return;
jscc.widgets.styleSwitcher.init();
jscc.widgets.fixedsidebar.init();
jscc.widgets.toTop.init();
jscc.api.google.init();


};
jscc.addEvent(window,"load",loaoao.com);