//判斷用戶的輸入是否合法
function check(){
	if (myform.UserName.value==""){
		alert("請輸入用戶名！");myform.UserName.focus();return;
	}
	if (myform.TrueName.value==""){
		alert("請輸入真實姓名！");myform.TrueName.focus();return;
	}
	if (myform.PWD1.value==""){
		alert("請輸入密碼！");myform.PWD1.focus();return;
	}
	if (myform.PWD1.value.length<6){
		alert("密碼至少為6位，請重新輸入！");myform.PWD1.focus();return;
	}		
	if (myform.PWD2.value==""){
		alert("請確認密碼！");myform.PWD2.focus();return;
	}
	if (myform.PWD1.value!=myform.PWD2.value){
		alert("您兩次輸入的密碼不一致，請重新輸入！");myform.PWD1.focus();return;
	}
	if(myform.birthday.value==""){
		alert("請輸入您的生日");myform.birthday.focus();return;
	}		
	if(CheckDate(myform.birthday.value)){
		alert("請輸入標準日期（如：1980/07/17或1980-07-17）");myform.birthday.focus();return;
	}
	if (myform.Email.value==""){
		alert("請輸入Email地址！");myform.Email.focus();return;
	}
	var i=myform.Email.value.indexOf("@");
	var j=myform.Email.value.indexOf(".");
	if((i<0)||(i-j>0)||(j<0)){
		alert("您輸入的Email地址不正確，請重新輸入！");myform.Email.value="";myform.Email.focus();return;
	}
	myform.submit();		
}
//判斷輸入的日期是否正確
function CheckDate(INDate)
{ if (INDate=="")
    {return true;}
	subYY=INDate.substr(0,4)
	if(isNaN(subYY)){
		return true;
	}
	//轉換月份
	if(INDate.indexOf('-',0)!=-1){	separate="-"}
	else{
		if(INDate.indexOf('/',0)!=-1){separate="/"}
		else {return true;}}
		area=INDate.indexOf(separate,0)
		subMM=INDate.substr(area+1,INDate.indexOf(separate,area+1)-(area+1))
		if(isNaN(subMM)){
		return true;
	}
		if(subMM.length<2){subMM="0"+subMM}
	//轉換日
	area=INDate.lastIndexOf(separate)
	subDD=INDate.substr(area+1,INDate.length-area-1)
	if(isNaN(subDD)){
		return true;
	}
	if(eval(subDD)<10){subDD="0"+eval(subDD)}
	NewDate=subYY+"-"+subMM+"-"+subDD
	if(NewDate.length!=10){return true;}
    if(NewDate.substr(4,1)!="-"){return true;}
    if(NewDate.substr(7,1)!="-"){return true;}
	if(NewDate.substr(5,2)>"12"){return true;}
	if(NewDate.substr(8,2)>"31"){return true;}
   return false;}