function el(id){ 
    return document.getElementById(id);
}

window.onload = function(){
    //alert(abc);
    el("div1").oncontextmenu = function(ev){
        showMenu(ev);
        return false;
    };
    document.onmousedown = function(){if(!over)hideMenu();};
};
var over = false;
var menu = null;
function showMenu(ev){
    ev = ev || window.event;
    hideMenu();
    var e = ev.srcElement || ev.target;
    if(e.tagName=="TH") return;
    var x = ev.pageX || ev.clientX + document.documentElement.scrollLeft;
    var y = ev.pageY || ev.clientY + document.documentElement.scrollTop;
    menu = document.createElement("DIV");
    menu.className = "menu";
    menu.style.left = x+4+"px";
    menu.style.top = y+"px";
    document.body.appendChild(menu);

    var id = e.parentNode.getElementsByTagName("td")[0].innerHTML;    
    e.parentNode.id = "tr_"+id;
    
    var sname = document.location.pathname.substring(7,location.pathname.length).toString();
    
    var s = "<a href=\"javascript:showInfo({id},'{sname}');\">详细信息</a>";
    s += "<a href=\"javascript:refresh('{sname}');\">刷新</a>";
    //s += "<a href='javascript:editInfo({id});'>修改用户信息</a>";
    //s += "<a href='javascript:deleteInfo({id});'>删除该条记录</a>";
    s = s.replace(/{id}/g, id);
    s = s.replace(/{sname}/g, sname);
    
    menu.innerHTML = s;
    menu.onmouseover = function(){over=true;};
    menu.onmouseout = function(){over=false;};
}
function hideMenu(){
    if(menu){
        document.body.removeChild(menu);
        menu = null;
    }
}
function refresh(sname){
    var req = getReq();
    req.open("GET", sname+"?refresh=1&id=", true);
    /*req.onreadystatechange = function(){
        if(req.readyState==4)
        {
            el("bod").innerHTML = req.responseText;
        }
    };*/
    req.send(null);
}
function showInfo(id,sname){
    hideMenu();
    shideBody();
    
    el("tit").innerHTML = "查看用户的详细信息";
    el("bod").innerHTML = "<img src='wait.gif' alt='loading...' />";
    el("bot").innerHTML = "<input type='button' value='关闭' onclick='cancelShide()' />";
    
    var req = getReq();
    req.open("GET", sname+"?getinfo=1&id="+id, true);
    req.onreadystatechange = function(){
        if(req.readyState==4){
            el("bod").innerHTML = req.responseText;
        }
    };
    req.send(null);
}
function editInfo(id){
    hideMenu();
    shideBody();
    
    el("tit").innerHTML = "编辑用户信息";
    el("bod").innerHTML = "<img src='wait.gif' alt='loading...' />";
    el("bot").innerHTML = "<input type='button' value='确定' onclick='doEdit("+id+")' /> <input type='button' value='取消' onclick='cancelShide()' />";
    var tds = el("tr_"+id).getElementsByTagName("td");
    var boy = tds[2].innerHTML == "男";
    var s = "<table>";
    s += "<tr><td>姓名</td><td><input type='text' value='"+ tds[1].innerHTML +"' /></td></tr>";
    s += "<tr><td>性别</td><td><input type='radio' name='rad_sex'"+ (boy?" checked":"") +" />男 <input type='radio' name='rad_sex'"+ (!boy?" checked":"") +" />女</td></tr>";
    s += "<tr><td>年龄</td><td><input type='text' value='"+ tds[3].innerHTML +"' /></td></tr>";
    s += "</table>";
    el("bod").innerHTML = s;
}
function deleteInfo(id){
    hideMenu();
    if(!confirm("确定要删除该记录吗？"))return;
    
    removeRow(el("tr_"+id));
    
    var req = getReq();
    req.open("GET", "default.aspx?delete=1&id="+id, true);
    req.onreadystatechange = function(){};
    req.send(null);
}
function doEdit(id){
    var puts = el("bod").getElementsByTagName("input");
    if(isNaN(puts[3].value)){
        puts[3].select();return;
    }
    var tds = el("tr_"+id).getElementsByTagName("td");
    tds[1].innerHTML = puts[0].value;
    tds[2].innerHTML = puts[1].checked?"男":"女";
    tds[3].innerHTML = puts[3].value;
    
    var data = "name="+ escape(tds[1].innerHTML);
    data += "&sex="+ escape(tds[2].innerHTML);
    data += "&age="+ escape(tds[3].innerHTML);
    
    var req = getReq();
    req.open("POST", "default.aspx?edit=1&id="+id, true);
    req.setRequestHeader("Content-Type","application/x-www-form-urlencoded");
    req.onreadystatechange = function(){};
    req.send(data);
    
    cancelShide();
}

var shield;
function shideBody()
{
    shield = document.createElement("DIV");
    shield.id = "shield";
    shield.style.position = "absolute";
    shield.style.left = "0px";
    shield.style.top = "0px";
    shield.style.width = "100%";
    shield.style.height = document.documentElement.scrollHeight+"px";
    shield.style.background = "#333333";
    shield.style.textAlign = "center";
    shield.style.zIndex = "10";
    shield.style.filter = "alpha(opacity=0)";
    shield.style.opacity = 0;
    document.body.appendChild(shield);
    
    this.setOpacity = function(obj,opacity){
    if(opacity>=1)opacity=opacity/100;
    try{ obj.style.opacity=opacity; }catch(e){}
    try{
        if(obj.filters.length>0 && obj.filters("alpha")){
            obj.filters("alpha").opacity=opacity*150;
        }else{
            obj.style.filter="alpha(opacity=\""+(opacity*150)+"\")";
        }
    }catch(e){}
    }
    var c = 0;
    this.doAlpha = function(){
    if (++c > 20){clearInterval(ad);return 0;}
    setOpacity(shield,c);
    }
    var ad = setInterval("doAlpha()",1);

    el("divh").style.display = "";
    el("divh").style.marginTop = -75+document.documentElement.scrollTop + "px";
}
function cancelShide()
{
    if(el("divh"))
    {
        el("divh").style.display = "none";
    }
    if(shield)
    {
        document.body.removeChild(shield);
        shield = null;
    }
}

function getReq()
{
    var oHttpReq = null;
    
    if(window.ActiveXObject)
        oHttpReq = new ActiveXObject("MSXML2.XMLHTTP");
    else if(window.createRequest)
        oHttpReq = window.createRequest();
    else
        oHttpReq = new XMLHttpRequest();
        
    return oHttpReq;
}

function removeRow(e)
{
    e.style.backgroundColor = "#ff0000";
    setTimeout(function(){e.style.backgroundColor = "#ffcccc";},100);
    setTimeout(function(){e.style.backgroundColor = "MistyRose";},300);
    setTimeout(function(){e.style.display = "none";},450);
}