var textsizeCookieVal = readCookie('HLTextSize'),
currentSize = textsizeCookieVal != null ? parseInt(textsizeCookieVal) : 4;
changeTextSize();

function changeTextSize(type) {
    var sizes = ['xxsmall', 'xsmall', 'small', 'medium', 'large', 'xlarge', 'xxlarge'],
	sizeVal,
	defaultSize,
	d = document,
	x;

    if (currentSize > 6 || currentSize < 0) return;

    if (type == 'increase') {
        if (currentSize > 5) return;
        currentSize++;
    } else if (type == 'decrease') {
        if (currentSize < 1) return;
        currentSize--;
    }
    else if (type == 'reset') {
        currentSize = 3;
    }

    sizeVal = sizes[currentSize];
    defaultSize = currentSize == 4;

    if (defaultSize && !type) return;
    d.body.className = sizeVal;



    if (type) {
        eraseCookie('HLTextSize');
        createCookie('HLTextSize', currentSize, 365);
    }
}

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 createCookie(name, value, days) {
    var expires = "";
    if (days) {
        var date = new Date();
        date.setTime(date.getTime() + (days * 24 * 60 * 60 * 1000));
        expires = "; expires=" + date.toGMTString();
    }
    document.cookie = name + "=" + value + expires + "; path=/";
}