//Style Sheet Switcher version 1.1 Oct 10th, 2006
//Author: Dynamic Drive: http://www.dynamicdrive.com
//Usage terms: http://www.dynamicdrive.com/notice.htm

var manual_or_random="manual" //"manual" or "random"
var randomsetting="3 days" //"eachtime", "sessiononly", or "x days (replace x with desired integer)". Only applicable if mode is random.

//////No need to edit beyond here//////////////

function getCookie(Name) { 
var re=new RegExp(Name+"=[^;]+", "i"); //construct RE to search for target name/value pair
if (document.cookie.match(re)) //if cookie found
return document.cookie.match(re)[0].split("=")[1] //return its value
return null
}

function setCookie(name, value, days) {
var expireDate = new Date()
//set "expstring" to either future or past date, to set or delete cookie, respectively
var expstring=(typeof days!="undefined")? expireDate.setDate(expireDate.getDate()+parseInt(days)) : expireDate.setDate(expireDate.getDate()-5)
document.cookie = name+"="+value+"; expires="+expireDate.toGMTString()+"; path=/";
}

function deleteCookie(name){
setCookie(name, "moot")
}


function setStylesheet(title, randomize){ //Main stylesheet switcher function. Second parameter if defined causes a random alternate stylesheet (including none) to be enabled
var i, cacheobj, altsheets=[""]
for(i=0; (cacheobj=document.getElementsByTagName("link")[i]); i++) {
if(cacheobj.getAttribute("rel").toLowerCase()=="alternate stylesheet" && cacheobj.getAttribute("title")) { //if this is an alternate stylesheet with title
cacheobj.disabled = true
altsheets.push(cacheobj) //store reference to alt stylesheets inside array
if(cacheobj.getAttribute("title") == title) //enable alternate stylesheet with title that matches parameter
cacheobj.disabled = false //enable chosen style sheet
}
}
if (typeof randomize!="undefined"){ //if second paramter is defined, randomly enable an alt style sheet (includes non)
var randomnumber=Math.floor(Math.random()*altsheets.length)
altsheets[randomnumber].disabled=false
}
return (typeof randomize!="undefined" && altsheets[randomnumber]!="")? altsheets[randomnumber].getAttribute("title") : "" //if in "random" mode, return "title" of randomly enabled alt stylesheet
}

function chooseStyle(styletitle, days){ //Interface function to switch style sheets plus save "title" attr of selected stylesheet to cookie
if (document.getElementById){
setStylesheet(styletitle)
setCookie("mysheet", styletitle, days)
}
}

function indicateSelected(element){ //Optional function that shows which style sheet is currently selected within group of radio buttons or select menu
if (selectedtitle!=null && (element.type==undefined || element.type=="select-one")){ //if element is a radio button or select menu
var element=(element.type=="select-one") ? element.options : element
for (var i=0; i<element.length; i++){
if (element[i].value==selectedtitle){ //if match found between form element value and cookie value
if (element[i].tagName=="OPTION") //if this is a select menu
element[i].selected=true
else //else if it's a radio button
element[i].checked=true
break
}
}
}
}

if (manual_or_random=="manual"){ //IF MANUAL MODE
var selectedtitle=getCookie("mysheet")
if (document.getElementById && selectedtitle!=null) //load user chosen style sheet from cookie if there is one stored
   setStylesheet(selectedtitle)
}
else if (manual_or_random=="random"){ //IF AUTO RANDOM MODE
if (randomsetting=="eachtime")
setStylesheet("", "random")
else if (randomsetting=="sessiononly"){ //if "sessiononly" setting
if (getCookie("mysheet_s")==null) //if "mysheet_s" session cookie is empty
document.cookie="mysheet_s="+setStylesheet("", "random")+"; path=/" //activate random alt stylesheet while remembering its "title" value
else
setStylesheet(getCookie("mysheet_s")) //just activate random alt stylesheet stored in cookie
}
else if (randomsetting.search(/^[1-9]+ days/i)!=-1){ //if "x days" setting
if (getCookie("mysheet_r")==null || parseInt(getCookie("mysheet_r_days"))!=parseInt(randomsetting)){ //if "mysheet_r" cookie is empty or admin has changed number of days to persist in "x days" variable
setCookie("mysheet_r", setStylesheet("", "random"), parseInt(randomsetting)) //activate random alt stylesheet while remembering its "title" value
setCookie("mysheet_r_days", randomsetting, parseInt(randomsetting)) //Also remember the number of days to persist per the "x days" variable
}
else
setStylesheet(getCookie("mysheet_r")) //just activate random alt stylesheet stored in cookie
} 
}

<!--
// --- 預設值定義 ---------------------------
tPopWait		= 50 ;		// 停留 tWait 豪秒後顯示提示
tPopShow		= 9000 ;	// 顯示 tShow 豪秒後關閉提示
showPopStep		= 25 ;
popOpacity		= 99 ;

// --- 內部變量定義 -------------------------
sPop			= null ;
curShow			= null ;
tFadeOut		= null ;
tFadeIn			= null ;
tFadeWaiting	= null ;

function showPopupText()
{
	var o=event.srcElement ;

	if(o!=null)
	{
		MouseX	= event.x ;
		MouseY	= event.y ;

		if(o.alt!=null && o.alt!="")
		{
			o.dypop	= o.alt ;
			o.alt	= "" ;
			f		= true ;
		}

		if(o.title!=null && o.title!="")
		{
			o.dypop	= o.title ;
			o.title	= "" ;
			f		= true ;
		}

		if(o.dypop!=sPop)
		{
			sPop = o.dypop ;

			clearTimeout(curShow) ;
			clearTimeout(tFadeOut) ;
			clearTimeout(tFadeIn) ;
			clearTimeout(tFadeWaiting) ;

			if(sPop==null || sPop=="")
			{
				AlphaLayer.innerHTML				= "" ;
				AlphaLayer.style.filter				= "Alpha()" ;
				AlphaLayer.filters.Alpha.opacity	= 0 ;
			}
			else
			{
				if(o.dyclass!=null)
					popStyle = o.dyclass ;
				else
					popStyle = "AlphaText";

				curShow = setTimeout("showIt()", tPopWait) ;
			}
		}
	}
}

function showIt()
{
		AlphaLayer.className = popStyle ;
		AlphaLayer.innerHTML = sPop ;

		popWidth	= AlphaLayer.clientWidth ;
		popHeight	= AlphaLayer.clientHeight ;

		if(MouseX+12+popWidth>document.body.clientWidth)
			popLeftAdjust = -popWidth - 24 ;
		else
			popLeftAdjust = 0 ;

		if(MouseY+12+popHeight>document.body.clientHeight)
			popTopAdjust = -popHeight - 24 ;
		else
			popTopAdjust = 0 ;

		AlphaLayer.style.left	= MouseX+5+document.body.scrollLeft+popLeftAdjust ;
		AlphaLayer.style.top	= MouseY+5+document.body.scrollTop+popTopAdjust ;
		AlphaLayer.style.filter	= "Alpha(Opacity = 0)" ;

		fadeOut() ;
}

function fadeOut()
{
	if(AlphaLayer.filters.Alpha.opacity<popOpacity)
	{
		AlphaLayer.filters.Alpha.opacity += showPopStep ;
		tFadeOut = setTimeout("fadeOut()", 1) ;
	}
	else
	{
		AlphaLayer.filters.Alpha.opacity = popOpacity ;
		tFadeWaiting = setTimeout("fadeIn()", tPopShow) ;
	}
}

function fadeIn()
{
	if(AlphaLayer.filters.Alpha.opacity>0)
	{
		AlphaLayer.filters.Alpha.opacity -= 1 ;
		tFadeIn=setTimeout("fadeIn()", 1) ;
	}
}

document.onmouseover = showPopupText ;

-->