var NUM = "0123456789";	
var SALPHA = "abcdefghijklmnopqrstuvwxyz_";
var ALPHA = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"+SALPHA;
var EMAIL = "!#$%&*+-./=?@^`{}"+NUM+ALPHA;
var PASSWORD = "!@.#,$%^*&-" + ALPHA + NUM;
var ADDRESS = "!#$%&*+./=?@^`{|}";

function open_remote_window(u,w,h,e)
{
	var r_win;
	if(e != "")
		r_win = window.open(u, "", "width="+ w +",height="+ h +","+e);
	else
		r_win = window.open(u, "", "width="+ w +",height="+ h +",toolbar=no,menubar=no,scrollbars=no,resizable=no,status=no");
	r_win.focus();
}

function CheckType(s,spc)
{
	var i;
	for(i=0; i<s.length; i++)
		if(spc.indexOf(s.substring(i, i+1)) < 0) return false;
	return true;
}

function check_email(item_email)
{
	if(!CheckType(item_email.value, EMAIL)) { alert("Email¿¡ À߸øµÈ ¹®ÀÚ°¡ ÀÖ½À´Ï´Ù."); item_email.focus(); return false; }
	var a = item_email.value.indexOf('@');
	if(a <=0 || a == item_email.value.length -1 ) { alert("EmailÀº webmaster@rhk.co.kr µîÀÇ ÇüÅ·ΠÀÔ·ÂÇÏ¼Å¾ß ÇÕ´Ï´Ù."); item_email.focus(); return false; }
	return true;
}