/* $id: showdiv.js 15469 2008-12-19 06:34:44z testyang $ */
//创建显示层
var swtemp  = 0;
var timer   = null;

//显示层
function showdiv(obj)
{
    var inputid = obj.id;

    if (swtemp == 1)
    {
        hidediv("messagediv");
    }
    if (!getobj("messagediv"))
    {
        //若尚未创建就创建层
        crertdiv("" , "div" , "messagediv" , "messagediv");//创建层"messagediv"

        crertdiv("messagediv" , "li" , "messageli" , "messageli");//创建"请刷新"li
        getobj("messageli").innerhtml = show_div_text;

        crertdiv("messagediv" , "a" , "messagea" , "");//创建"关闭"a
        getobj("messagea").innerhtml = show_div_exit;
        getobj("messagea").onclick = function(){hidediv("messagediv");};
    }

    var newdiv = getobj("messagediv");

    newdiv.style.left    = (getabsoluteleft(obj) - 50) + "px";
    newdiv.style.top     = (getabsolutetop(obj) - 65) + "px";
    newdiv.style.display = "block";

    timer = settimeout(function(){hidediv("messagediv");} , 3000);

    swtemp  = 1;
}

//创建层
function crertdiv(parent , element , id , css)
{
    var newobj = document.createelement(element);

    if(id && id != "")
    {
        newobj.id = id;
    }
    if(css && css != "")
    {
        newobj.classname = css;
    }
    if(parent && parent!="")
    {
        var theobj = getobj(parent);
        var parent = theobj.parentnode;
        if(parent.lastchild == theobj)
        {
            theobj.appendchild(newobj);
        }
        else
        {
            theobj.insertbefore(newobj, theobj.nextsibling);
        }
    }
    else
    {
        document.body.appendchild(newobj);
    }
}

//隐藏层
function hidediv(objid)
{
    getobj(objid).style.display = "none";
    swtemp = 0;
    cleartimeout(timer);
}

//获取对象
function getobj(obj)
{
    return document.getelementbyid(obj);
}

function getabsoluteheight(obj)
{
    return obj.offsetheight;
}

function getabsolutewidth(obj)
{
    return obj.offsetwidth;
}

function getabsoluteleft(obj)
{
    var s_el = 0;
    var el   = obj;
    while(el)
    {
        s_el = s_el + el.offsetleft;
        el   = el.offsetparent;
    }
    return s_el;
}

function getabsolutetop(obj)
{
    var s_el = 0;
    var el   = obj;
    while(el)
    {
        s_el = s_el + el.offsettop;
        el   = el.offsetparent;
    }
    return s_el;
}