function Check(keyword) 
{ 
    var st_num, key_len; 
    st_num = keyword.indexOf(" ");     
    while (st_num != -1) 
    { 
        keyword = keyword.replace(" ", ""); 
        st_num  = keyword.indexOf(" "); 
    } 
    key_len=keyword.length; 
    return key_len; 
}
function open_idcheck() {
	if (checkid()) {
		window.open("../member/checkid.php?id=" + register.userid.value,"id","width=300,height=170");
	}
}
function check_sub(){
	if(!document.register.email.value){
		alert("Please enter a valid email address");
		document.register.email.focus();
		return false;
	}if(!document.register.pwd.value){
		alert("Please enter your password");
		document.register.pwd.focus();
		return false;
	} 
	if(!document.register.repwd.value){
		alert("Please verify your password");
		document.register.repwd.focus();
		return false;
	}else{
		if(document.register.pwd.value.length < 4 || document.register.pwd.value.length > 12){
			alert("Please enter your password(4~12 characters or number)");
			document.register.pwd.value = "";
			document.register.repwd.value = "";
			document.register.pwd.focus();
			return false;
		}else if(document.register.pwd.value != document.register.repwd.value){
			alert("Please verify your password.");
			document.register.pwd.value = "";
			document.register.repwd.value = "";
			document.register.pwd.focus();
			return false;
		}
	}
	if(!document.register.fname.value){
		alert("Please enter your first name");
		document.register.fname.focus();
		return false;
	}if(!document.register.lname.value){
		alert("Please enter your last name");
		document.register.lname.focus();
		return false;
	}if(!document.register.age.value){
		alert("Please enter your age ");
		document.register.age.focus();
		return false;
	} if(!isNumeric(document.register.age)){
		
		return false;
	}
	
	if(!document.register.birth_year.value){
		alert("Please enter your year born ");
		document.register.birth_year.focus();
		return false;
	} if(!isNumeric(document.register.birth_year)){
		
		return false;
	} 
	if(document.register.birth_year.value <= 1900){
				alert("Please enter your year born ex)1990");
				document.register.birth_year.focus();
				return false;
	}
	if(!document.register.zipcode.value){
		alert("Please enter your zipcode/postcode");
		register.zipcode.focus();
		return false;
	}
	
	if(!document.register.city.value){
		alert("Please enter your city");
		document.register.city.focus();
		return false;
	}
	if(!document.register.state.value){
		alert("Please enter your state");
		document.register.state.focus();
		return false;
	}
/*
	if(!document.register.province.value){
		alert("Please enter your province.");
		document.register.province.focus();
		return false;
	}
*/
	if(!register.country.value){
		alert("Please choose your  country");
		document.register.country.focus();
		return false;
	}if(!document.register.nowaddr.value){
		alert("Please enter the place you now live in ");
		document.register.nowaddr.focus();
		return false;
	}if(!document.register.occu.value){
		alert("Please choose your occupation");
		document.register.occu.focus();
		return false;
	}if(!document.register.content.value){
		alert("Please introduce yourself");
		document.register.content.focus();
		return false;
	}
/*
	if(Check(document.register.content.value)<50){
		alert("");
		document.register.content.focus();
		return false;
	}
	*/
	return true;
}