$ = function(em){	return document.getElementById(em);	};
$F = function(em){	return document.getElementById(em).value;	};

var isIE  = (navigator.appVersion.indexOf("MSIE") != -1) ? true : false;
var isWin = (navigator.appVersion.toLowerCase().indexOf("win") != -1) ? true : false;
var isOpera = (navigator.userAgent.indexOf("Opera") != -1) ? true : false;
var ver = "";
var VER_IE6 = "IE6";
var VER_IE7 = "IE7";
var VER_FE = "FE";

function stopError() {
return true;} 
window.onerror = stopError;

//搜索
function ChkTopSo(form){
	if (form.key.value!="") {form.action=""+web_url+"search.asp";form.submit();} else {alert("请输入查询关键词!");return false;}
}

//全选
function CheckAll(form){
	for (var i=0;i<form.elements.length;i++){
		var e = form.elements[i];
		e.checked = true;
	}
}
//反选
function CheckAllfan(form){
	for (var i=0;i<form.elements.length;i++){
		var e = form.elements[i];
			if (e.checked==false)	e.checked = true;
			else			e.checked = false;
	}
}
//播放
function MusicPlay(myform){
	var strCBValue = ""+web_url+"PlaySong.asp?id=";	
	var checknum=0;
	var N = myform.elements.length;
	for (var i=0;i<N;i++){
		var e = myform.elements[i];
		if (e.type=="checkbox"){
			if(e.checked){
					strCBValue = strCBValue + "_" + e.value;	
					checknum=checknum+1;				
			}
		}
	}
	if(strCBValue==""+web_url+"PlaySong.asp?id="){
		alert("请选择要播放的歌曲(可多选)");
		return false;
	}else{	
		if(checknum>100){
			alert("系统限制100首歌曲连播，您选择了"+checknum+"首歌曲超出了"+(checknum-100)+"！");
			return false;
		}else{
			window.open(strCBValue+"_",'7xiwl_player');
		}
	}
}

//按钮导航条
function ChangeDiv(N,K,it){
	for(i=1;i<N+1;i++){
		$(it+"t_"+i).className="n";
		$(it+"b_"+i).className="n";
	}
	$(it+"t_"+K).className="y";
	$(it+"b_"+K).className="y";
}