function _PlayWma(id)
	{
	window.open('http://www.4tmp3.com/music/mp3_player.php?songsid='+id,'_4TMP3');
	} 

function _PlayWmas(ThisForm)
	{	
	if(_CheckSid(ThisForm)==false)
		{
		alert("Please Selected Songs!");
		}
	else 
		{
		window.open('http://www.4tmp3.com/music/mp3_players.php?songsid='+ThisForm.checkedsid.value,'_4TMP3');
		}
	}


function _PlayWamToFriend(song)
	{
	window.open('http://www.4tmp3.com/myad/4tmp3_mianfeidiange.html');
	}


function _CheckSid(ThisForm) 
	{
	var IsChecked = false;
	ThisForm.checkedsid.value="";
	for (var i=0;i<ThisForm.sid.length;i++)
		{
		var t=ThisForm.sid[i];
		if(t.name!='checkedsid' && t.checked)
			{
			ThisForm.checkedsid.value+=t.value;
			IsChecked = true;
			}
		}
	return IsChecked;
	} 

function _SelectedAll(ThisForm) 
	{
	for(var i=0;i<ThisForm.elements.length;i++)
		{
		var t=ThisForm.elements[i];
		if(t.name!='checkedsid') t.checked=ThisForm.checkedsid.checked;
		}
	}

function _CheckedAll(ThisForm)
	{
	for (var i=0;i<ThisForm.elements.length;i++)
		{
		var t = ThisForm.elements[i];
		t.checked = true
		}
	}

function _unCheckedAll(ThisForm)
	{
	for (var i=0;i<ThisForm.elements.length;i++)
		{
		var t = ThisForm.elements[i];
		if (t.checked==false)
			t.checked = true;
		else
			t.checked = false;
		}
	}