// JavaScript Document
//changeFontSize
//Takako Miyagawa

    var manager;
    var sizeID;


    function main(){
        manager = new CookieManager({shelfLife:30});
        sizeID = manager.getCookie("fsize");
        if(sizeID < 9){ sizeID = 12;}
        changeFontSize();
    }
    function fontB(){
            if(sizeID < 30){
                sizeID = parseInt(sizeID) + 2;
            }else if (sizeID < 9){
                sizeID = 12;
            }
            changeFontSize();
        }
function fontS(){
            if(sizeID > 8 ){
                sizeID = parseInt(sizeID) - 2;
            }
            changeFontSize();
        }
    function fontN(){
            sizeID = 12;
            changeFontSize();
    }
    function changeFontSize(){
        var com = sizeID + "px";
        document.getElementById("content").style.fontSize = com;
        var h3size = parseInt(sizeID) * 1.2;
        com = h3size + "px";
        var elems= $$("#content h2");
        for ( var i=0; i<elems.length; i++ ){
            elems[i].style.fontSize = com;
        }
        elems= $$("#content h3");
        for ( var i=0; i<elems.length; i++ ){
            elems[i].style.fontSize = com;
        }
		elems= $$("#content h4");
        for ( var i=0; i<elems.length; i++ ){
            elems[i].style.fontSize = com;
        }
     manager = new CookieManager({shelfLife:30});
     manager.setCookie("fsize", sizeID);
    }