var font_Size = 12   //默认大小为10

function setCookie(name, value)		//cookies设置
{
    var argv = setCookie.arguments;
    var argc = setCookie.arguments.length;
    var expires = (argc > 2) ? argv[2] : null;
    if (expires != null) {
        var LargeExpDate = new Date();
        LargeExpDate.setTime(LargeExpDate.getTime() + (expires * 1000 * 3600 * 24));
    }
    document.cookie = name + "=" + escape(value) + ((expires == null) ? "" : ("; expires=" + LargeExpDate.toGMTString()));
}

function getCookie(Name)			//cookies读取
{
    var search = Name + "="
    if (document.cookie.length > 0) {
        offset = document.cookie.indexOf(search)
        if (offset != -1) {
            offset += search.length
            end = document.cookie.indexOf(";", offset)
            if (end == -1) end = document.cookie.length
            return unescape(document.cookie.substring(offset, end))
        }
        else return ""
    }
}
function setfontSize()
{
     if(getCookie("fontSize")=="")
     {
          setCookie("fontSize",font_Size);
     }
     else
     {
          font_Size=getCookie("fontSize");
     }
     document.getElementById('container').style.fontSize=font_Size+'pt';
}
function setfontSize12()
{
     setCookie("fontSize",12);
     font_Size=getCookie("fontSize");
     document.getElementById('container').style.fontSize=font_Size+'pt';
}
function setfontSize14()
{
     setCookie("fontSize",14);
     font_Size=getCookie("fontSize");
     document.getElementById('container').style.fontSize=font_Size+'pt';
}
function setfontSize16()
{
     setCookie("fontSize",16);
     font_Size=getCookie("fontSize");
     document.getElementById('container').style.fontSize=font_Size+'pt';
}