var last_id = null;
    function menu(id)
    {
        if (id != last_id)
        {
            if (last_id != null)
                document.getElementById(last_id).style.display = "none";
            document.getElementById(id).style.display = "block";
            last_id = id;
        }
        else
        {
            document.getElementById(id).style.display = "none";
            last_id = null;
        }
    }

    function textarea_decrease(id, row)
    {
        if (document.getElementById(id).rows - row > 0)
            document.getElementById(id).rows -= row;
    }

    function textarea_original(id, row)
    {
        document.getElementById(id).rows = row;
    }

    function textarea_increase(id, row)
    {
        document.getElementById(id).rows += row;
    }


    function check_byte(content, target)
    {
        var i = 0;
        var cnt = 0;
        var ch = '';
        var cont = document.getElementById(content).value;

        for (i=0; i<cont.length; i++) {
            ch = cont.charAt(i);
            if (escape(ch).length > 4) {
                cnt += 2;
            } else {
                cnt += 1;
            }
        }

        document.getElementById(target).innerHTML = cnt;

        return cnt;
    }


    function get_left_pos(obj)
    {
        var parentObj = null;
        var clientObj = obj;
        //var left = obj.offsetLeft + document.body.clientLeft;
        var left = obj.offsetLeft;

        while((parentObj=clientObj.offsetParent) != null)
        {
            left = left + parentObj.offsetLeft;
            clientObj = parentObj;
        }

        return left;
    }


    function get_top_pos(obj)
    {
        var parentObj = null;
        var clientObj = obj;
        //var top = obj.offsetTop + document.body.clientTop;
        var top = obj.offsetTop;

        while((parentObj=clientObj.offsetParent) != null)
        {
            top = top + parentObj.offsetTop;
            clientObj = parentObj;
        }

        return top;
    }



function tog(dt)
{
var display, dd=dt;
/* get dd */
do{ dd = dd.nextSibling } while(dd.tagName!='DD');
toOpen =!dd.style.display;
dd.style.display = toOpen? 'block':''
dt.getElementsByTagName('span')[0].innerHTML
= toOpen? '&#8212 ':'> ' ;
}