function isNull( str )
	{

		if ( str == "" ) return true;

		var regu = "^[ ]+$";

		var re = new RegExp(regu);

		return re.test(str);

	}
	function isEmail(strArg){
		re = /^[\w-\.]+\@[\w-]+\.[a-zA-Z]+(\.[a-zA-Z]{2,4})?$/;
		if(!re.exec(strArg)){
			return false;
		}else{
			return true;
		}
	}
	function isPhone( str ){
		var z = "[^0-9*#+-()]";
		if(str.match(z)){
			return false;
		}else{
			return true;
		}
	}
	function isNumber( str )
	{   
			var   Letters   =   "1234567890-#()*";   
	    for   (var i=0;i<str.length;i++)   
		{   
	      var   CheckChar   =   str.charAt(i);   
	      if   (Letters.indexOf(CheckChar)   ==   -1){return   false;}   
		}return   true;   

	}

function check_loginform(form){
	var username = form.username.value;
	var password = form.password.value;
	//alert("username = "+username+",password = "+password);
	if(isNull(username)){
		alert("请输入用户名！");
		return false;
	}
	if(isNull(password)){
		alert("请输入密码！")
		return false;
	}
	//return false;
}

function check_registerform(form){
	var mbrId = form.mbrId.value;
	var password = form.password.value;
	var passwordConfirm = form.passwordConfirm.value;
	var nickName = form.nickName.value;
	var email = form.email.value;
	//var username = form.username.value;
	//var sexArr = form.sex;
	//var address = form.address.value;
	//var phone = form.phone.value;
	//var mobilePhone = form.mobilePhone.value;
	//alert("mbrId = "+mbrId);
	if(isNull(mbrId)){
		alert("会员帐号不能为空！");
		return false;
	}
	if(isNull(password)){
		alert("会员密码不能为空！");
		return false;
	}
	if(isNull(passwordConfirm)){
		alert("密码确认不能为空！");
		return false;
	}
	if(password!=passwordConfirm){
		alert("两次密码输入必须相同！");
		return false;
	}
	
	if((password.length<4)||(password.length>16)){
		alert("密码长度不对！");
		return false;
	}
	
	if(isNull(nickName)){
		alert("会员昵称不能为空！");
		return false;
	}
	if(isNull(email)||!isEmail(email)){
		alert("email地址填写不正确！");
		return false;
	}
	return true;
}

function check_modifypwform(form){
	var old_password = form.old_password.value;
	var new_password = form.new_password.value;
	var confirm_password = form.confirm_password.value;
	//alert("username = "+username+",password = "+password);
	if(isNull(old_password)){
		alert("请输入旧密码！");
		return false;
	}
	if(isNull(new_password)){
		alert("请输入新密码！")
		return false;
	}
	if(isNull(confirm_password)){
		alert("请输入确认密码！")
		return false;
	}
	if(confirm_password!=new_password){
		alert("确认密码不正确！")
		return false;
	}
	if(new_password.length>10){
		alert("最多输入10个英数字元！")
		return false;
	}
}


function downView(shortCode){
	window.open("http://sso.bj.monternet.com/order?ICPCode="+801049+"&DeliverURL=http://homer.walala.cn:8880/ssodeliver.do"+"&ICPServID="+520+"&SeqNo="+getrandom()+"&ItemID="+shortCode+"&ActionID="+10+
		"&BackURL="+"http://www.ilovesuper.com.cn/star2/tomusic.do");
	//http://192.168.1.253:8000/star/portal/externalPages/star/pictrueAndring/result.html
	//http://www.ilovesuper.com.cn/star/product/actions/productmgmt.do?cmd=PW5000
}

function getrandom(){
	var num = Math.random()*1000000;
	var num1 = Math.round(num,4);
	return getdate()+num1;
}

function getdate(){
	var date = new Date();
	var year = date.getYear()+"";
	var month = date.getMonth()+1+"";
	if(month.length<2){
		month = "0"+month;
	}
	var day = date.getDay()+"";
	if(day.length<2){
		day = "0"+day;
	}
		return year+month+day;
}

function isNull( str )
{

	if ( str == "" ) return true;

	var regu = "^[ ]+$";

	var re = new RegExp(regu);

	return re.test(str);

}


function dynAnimation() {}
function clickSwapImg() {}

		function MM_preloadImages() { //v3.0
  		var d=document; 
  		if(d.images){ 
  			if(!d.MM_p) 
  				d.MM_p=new Array();
    		var i,j=d.MM_p.length,a=MM_preloadImages.arguments; 
    		for(i=0; i<a.length; i++)
    			if (a[i].indexOf("#")!=0){ 
    				d.MM_p[j]=new Image; 
    				d.MM_p[j++].src=a[i];
    			}
    	}
		}
function songPreview(title,file){
	pop=window.open('/preview.jsp?path=/star2'+'&file='+file+"&title="+title,"WG_Preview_MIDI",'scrollbars=0,status=yes,width=289,height=151,left=300,top=70');
}