function checkForm(){
	if(document.pray_form.nickname.value==""){		
		alert("請填寫暱稱!");
		document.pray_form.nickname.focus();
		return false;
	}
	if(document.pray_form.name.value==""){		
		alert("請填寫姓名!");
		document.pray_form.name.focus();
		return false;
	}
	if(document.pray_form.email.value==""){
		alert("請填寫電子郵件!");
		document.pray_form.email.focus();
		return false;
	}
	if(!checkmail(document.pray_form.email)){
		document.pray_form.email.focus();
		return false;
	}
	if(document.pray_form.sex.value ==""){
		alert("請選取性別!");
		document.pray_form.sex.focus();
		return false;
	}
	if(document.pray_form.tel.value==""){
		alert("請填寫手機號碼，以便得獎聯絡!");
		document.pray_form.tel.focus();
		return false;
	}
	if(document.pray_form.word.value==""){
		alert("請勿少於10個字!");
		document.pray_form.word.focus();
		return false;
	}
	if(document.pray_form.pray.checked ==""){
		alert("請選取祝福的圖案!");
		document.pray_form.pray.focus();
		return false;
	}
	return;// confirm('確定送出嗎？');
}
function checkmail(myEmail) {
	var filter  = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;
	if(filter.test(myEmail.value)){
		return true;
	}
	alert("電子郵件格式不正確");
	return false;
}