function getCookie(Name) {
    var re=new RegExp(Name+"=[^;]+", "i");
    if (document.cookie.match(re))
       return document.cookie.match(re)[0].split("=")[1] //return its value
    return null
}

function setCookie(name, value, days) {
    var expireDate = new Date()
    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) {
    var i, cacheobj
    for(i=0; (cacheobj=document.getElementsByTagName("link")[i]); i++) {
        if(cacheobj.getAttribute("rel").indexOf("style") != -1 && cacheobj.getAttribute("title")) {
            cacheobj.disabled = true
            if(cacheobj.getAttribute("title") == title)
                cacheobj.disabled = false
        }
    }
}

function chooseStyle(styletitle, days){
    if (document.getElementById){
        setStylesheet(styletitle)
        setCookie("mysheet", styletitle, days)
    }
}

function indicateSelected(element){
    var i
    if (selectedtitle!=null && (element.type==undefined || element.type=="select-one")){
        var element=(element.type=="select-one") ? element.options : element
        for (i=0; i<element.length; i++){
            if (element[i].value==selectedtitle){
                if (element[i].tagName=="OPTION")
                    element[i].selected=true
                else
                    element[i].checked=true
                break
            }
        }
    }
}

var selectedtitle=getCookie("mysheet")
if (document.getElementById && selectedtitle!=null)
    setStylesheet(selectedtitle)