//歌曲选择
function selectall(pre, bid)
{
    var sel = true;
    if (bid)
    {
        if ($(bid).value=='全选')
        {
            $(bid).value='取消';
        }
        else
        {
            $(bid).value='全选';
            sel = false;
        }
    }
    var chkboxs = document.getElementsByTagName('input');
    for (var i = 0; i < chkboxs.length; i++)
    {
        var obj = chkboxs[i];
        if (obj.name !='chkAll')
        if ((obj.type == 'checkbox') && (obj.name.indexOf(pre) > -1))
        {
            obj.checked = sel;
        }
    }
}
/*
function selectall(pre, sel)
{
    var chkboxs = document.getElementsByTagName('input');
    for (var i = 0; i < chkboxs.length; i++)
    {
        var obj = chkboxs[i];
        if ((obj.type == 'checkbox') && (obj.name.indexOf(pre) > -1))
        {
            obj.checked = sel;
        }
    }
}*/
//歌曲反选
function Checkback(pre)
{
    var chkboxs = document.getElementsByTagName('input');
    for (var i = 0; i < chkboxs.length; i++)
    {
        var obj = chkboxs[i];
        if ((obj.type == 'checkbox') && (obj.name.indexOf(pre) > -1))
        {
            obj.checked = !(obj.checked);
        }
    }
}
//选择播放
function playsel(pre)
{
    var idlist = '';
    var chkboxs = document.getElementsByTagName('input');
    for (var i = 0; i < chkboxs.length; i++)
    {
        var obj = chkboxs[i];
        if ((obj.type == 'checkbox') && (obj.name.indexOf(pre) > -1) && (obj.checked))
        {
            idlist += ',' + obj.value;
        }
    }
    if (idlist.length < 1)
    {
        alert('请选择要播放的歌曲');
        return false;
    }
    var hostName = gethostname();
    window.open('http://www.'+hostName+'/play.php?sid='+idlist.substring(1));
}
// return like sgting.com
function gethostname()
{
    var cururl = location.href;
    cururl = cururl.substring(0, cururl.indexOf('/', 7));
    return cururl.substring(cururl.indexOf('.', 7)+1);
}
//选择删除歌曲(没用到)
function delsel(pre,t)
{
    var idlist = '';
    var chkboxs = document.getElementsByTagName('input');
    for (var i = 0; i < chkboxs.length; i++)
    {
        var obj = chkboxs[i];
        if ((obj.type == 'checkbox') && (obj.name.indexOf(pre) > -1) && (obj.checked))
        {
            idlist += ',' + obj.value;
        }
    }
    if (idlist.length < 1)
    {
        alert('请选择要删除的歌曲');
        return false;
        
    }
    else
    {
        var sid=idlist.substring(1);
        $('sid').value=sid;
        if(t==1)
        {
            sgtajax.delsong($('sid').value);
        }
        if(t==2)
        {
            sgtajax.del_favsong($('sid').value);//删除收藏
        }
    }
}

//专辑添加歌曲
function albumaddsong(songid, songname, songer, lyrics, composer, username)
{
    if ($("seldiv_" + songid) != null)
    {
        return;
    }
    if (lyrics == '') lyrics = '暂无';
    if (composer == '') composer = '暂无';
    var objparent = document.createElement('div');
    objparent.id = "seldiv_" + songid;
    objparent.className = 'list';

    var obj1 = document.createElement('div');
    obj1.className = "li-1";
    obj1.innerHTML = '<a href="http://www.sgting.com/play.php?sid='+songid+'" target="_blank">'+songname+'</a>';

    var obj2 = document.createElement('div');
    obj2.className = "li-2";
    obj2.innerHTML = '<a href="http://'+username+'.sgting.com/" target="_blank">'+songer+'</a>';

    var obj3 = document.createElement('div');
    obj3.className = "li-3";
    obj3.innerText = lyrics;

    var obj4 = document.createElement('div');
    obj4.className = "li-4";
    obj4.innerText = composer;

    var obj5 = document.createElement('div');
    obj5.className = "li-5";
    obj5.innerHTML = '<a href="http://www.sgting.com/play.php?sid='+songid+'" target="_blank">试听</a>';

    var obj6 = document.createElement('div');
    obj6.className = "li-6";
    obj6.innerHTML = '<input type="checkbox" value="'+songid+'" name="selsong_'+songid+'" checked>';
    
    objparent.appendChild(obj1);
    objparent.appendChild(obj2);
    objparent.appendChild(obj3);
    objparent.appendChild(obj4);
    objparent.appendChild(obj5);
    objparent.appendChild(obj6);
    $('condiv').appendChild(objparent);
}
function deldiv(objid)
{
    $(objid).style.display = 'none';
}
function selsave(pre)
{
    if ($('albumname').value.length < 1)
    {
        alert('请输入专辑名称');
        $('albumname').focus();
        return false;
    }
    var idlist = '';
    var chkboxs = document.getElementsByTagName('input');
    for (var i = 0; i < chkboxs.length; i++)
    {
        var obj = chkboxs[i];
        if ((obj.type == 'checkbox') && (obj.name.indexOf(pre) > -1) && (obj.checked))
        {
            idlist += ',' + obj.value;
        }
    }
    $('sid').value=idlist.substring(1);
    return true;
}