function setActiveStyleSheet(title) {

    var i, a, main;

    if (title) {

        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;

            }

        }

    }

}



function getActiveStyleSheet() {

    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');

    }

    

    // setActiveStyleSheet(a.getAttribute('title'));

    

    // return null;

}



function getPreferredStyleSheet() {

    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;

}



function createCookie(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=/';

}



function readCookie(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;

}



function eraseCookie(name) {

    createCookie(name,'',-1);

}



function setFontSize(fontVal) {

    var fontSet = document.getElementById('fontSet');

    var docBase = new Array(); docBase = document.getElementsByTagName('body');

    if (!fontVal) {fontVal = document.getElementById('fontSet').value;}

    var docSize = fontVal+'px';

    createCookie('baseTextSize', fontVal, 365);

    docBase[0].style.fontSize = docSize;

    if (fontSet) {fontSet.value = fontVal;}

}



Event.observe(window, 'load', function() {



    var cookie = readCookie('themeName');

    var title = cookie ? cookie : 'azul'; //getPreferredStyleSheet();



    if (title == 'null' || title == 'undefined' || title.length < 1) {

        setActiveStyleSheet('azul');

    } else {

        setActiveStyleSheet(title);

    }



    var cookie2 = readCookie('baseTextSize');

    

    if (cookie2) {

        setFontSize(cookie2);

    }

});



window.onunload = function(e) {

    var title = getActiveStyleSheet();

    createCookie('themeName', title, 365);

}



//Abaixo segue o script que prmite alterar todo o estilo do site//

function selectStyle(tit){

    var s=document.getElementsByTagName("link")

    for(var i=0;i<s.length;i++)

        if(s[i].type=="text/css")s[i].disabled=s[i].title!=tit

}