function increaseFontSize() {
    var varp = document.getElementsByTagName('p');
    var varli = document.getElementsByTagName('li');
    var varh1 = document.getElementsByTagName('h1');
    var varh2 = document.getElementsByTagName('h2');
    var varh3 = document.getElementsByTagName('h3');
    var varform = document.getElementsByTagName('form');

    var varinput = document.getElementsByTagName('input');
    var vartextarea = document.getElementsByTagName('textarea');
    var vardiv = getElementsByClassName("specs titre");
    var varselect = document.getElementsByTagName('select');
    var var13 = getElementsByClassName("gr13");
    var var14 = getElementsByClassName("gr14");
    var var18 = getElementsByClassName("gr18");
    var var20 = getElementsByClassName("gr20");
    var var26 = getElementsByClassName("gr26");


    increase(varp, 25, 14);
    increase(varli, 25, 14);
    increase(varh1, 37, 26);
    increase(varh2, 29, 18);
    increase(varh3, 31, 20);
    increase(varform, 25, 14);
    increase(vardiv, 25, 14);
   // increase(varlabel, 25, 14);
    //increase(varspan, 25, 14);
    increase(var13, 24, 13);
    increase(var14, 25, 14);
    increase(var18, 29, 18);
    increase(var20, 31, 20);
    increase(var26, 37, 26);
    

    increase(vartextarea, 25, 14);
    increase(varinput, 25, 14);
    increase(varselect, 25, 14);
}


function decreaseFontSize() {
    var varp = document.getElementsByTagName('p');
    var varli = document.getElementsByTagName('li');
    var varh1 = document.getElementsByTagName('h1');
    var varh2 = document.getElementsByTagName('h2');
    var varh3 = document.getElementsByTagName('h3');
    var varform = document.getElementsByTagName('form');
    
    var varselect = document.getElementsByTagName('select');
    var varinput = document.getElementsByTagName('input');
    var vartextarea = document.getElementsByTagName('textarea');

    var vardiv = getElementsByClassName("specs titre");
    var var13 = getElementsByClassName("gr13");
    var var14 = getElementsByClassName("gr14");
    var var18 = getElementsByClassName("gr18");
    var var20 = getElementsByClassName("gr20");
    var var26 = getElementsByClassName("gr26");

    smaller(varp, 8, 14);
    smaller(varli, 8, 14);
    smaller(varh1, 20, 26);
    smaller(varh2, 12, 18);
    smaller(varh3, 14, 20);
    smaller(varform, 8, 14);
    
    smaller(vardiv, 8, 14);
    smaller(vartextarea, 8, 14);
    smaller(varinput, 8, 14);
    smaller(varselect, 8, 14);

    smaller(var13, 7, 13);
    smaller(var14, 8, 14);
    smaller(var18, 12, 18);
    smaller(var20, 14, 20);
    smaller(var26, 20, 26);

}

function increase(element, varmax, normal) 
{
    for (i = 0; i < element.length; i++) 
    {
        if (element[i].style.fontSize) 
        {
            var s = parseInt(element[i].style.fontSize.replace("px", ""));
        }
        else 
        {
            var s = normal;
        }
        if (s < varmax) 
        {
            s += 1;
        }

        if (element[i].className != "plan" && element[i].className != "ac" && element[i].className != "sep" && element[i].className != "ne" && element[i].className != "nj" && element[i].className != "slogan" && element[i].className != "ns" && element[i].className != "rit" && element[i].className != "pro" && element[i].className != "loi" && element[i].className != "sug" && element[i].className != "liens" && element[i].className != "car" && element[i].className != "stable" && element[i].className != "rech" && element[i].className != "boutons")
            element[i].style.fontSize = s + "px";
    }
    
}

function smaller(element, varmin, normal)
{
    for (i = 0; i < element.length; i++) 
    {
        if (element[i].style.fontSize) 
        {
            var s = parseInt(element[i].style.fontSize.replace("px", ""));
        } 
        else 
        {
            var s = normal;
        }
        if (s > varmin) 
        {
            s -= 1;
        }

        if (element[i].className != "plan" && element[i].className != "ac" && element[i].className != "sep" && element[i].className != "ne" && element[i].className != "nj" && element[i].className != "slogan" && element[i].className != "ns" && element[i].className != "rit" && element[i].className != "pro" && element[i].className != "loi" && element[i].className != "sug" && element[i].className != "liens" && element[i].className != "car" && element[i].className != "stable" && element[i].className != "rech" && element[i].className != "boutons")
            element[i].style.fontSize = s + "px";
    }
}