window.onload = function() {
    LoadTextSize();
}

var maxsize = 150;
var minsize = 50;
var standardsize = 100;
var cookiename = 'sizetype';
var divtarget = 'content';

function SetSize(size) {
    var newssize = size + '%';
    var page = document.getElementById(divtarget);
    var sizedisplay = document.getElementById('cursize');
    if (page != undefined) {
        page.style.fontSize = newssize;
    }
    if (sizedisplay != undefined) {
        sizedisplay.innerHTML = newssize;
    }
}

function SetTextSize(sizetype) {

    if (!GetCookie(cookiename)) {
        SetCookie(cookiename, standardsize);
        SetSize(standardsize);
    }
    if (sizetype == 'increase') {
        var savedsize = GetCookie(cookiename);
        if (savedsize < maxsize) {
            savedsize = savedsize - 0 + 10;
            SetCookie(cookiename, savedsize);
            SetSize(savedsize);
        }
    }
    else {
        var savedsize = GetCookie(cookiename);
        if (savedsize > minsize) {
            savedsize -= 10;
            SetCookie(cookiename, savedsize);
            SetSize(savedsize);
        }
    }

}

function LoadTextSize() {
    var savedsize = GetCookie(cookiename);
    if (savedsize) {
        SetSize(savedsize);
    }
    else {
        SetSize(standardsize);
    }
}