var uppercase = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"; 
var lowercase = "abcdefghijklmnopqrstuvwxyz"; 
var number = "0123456789"; 

 /** 
* ÀԷ°ªÀÌ Æ¯Á¤ ¹®ÀÚ(chars)¸¸À¸·Î µÇ¾îÀÖ´ÂÁö üũ 
* ƯÁ¤ ¹®ÀÚ¸¸ Çã¿ëÇÏ·Á ÇÒ ¶§ »ç¿ë 
* ex) if (!containsCharsOnly(form.blood,"ABO")) { 
* alert!("Ç÷¾×Çü Çʵ忡´Â A,B,O ¹®ÀÚ¸¸ »ç¿ëÇÒ ¼ö ÀÖ½À´Ï´Ù."); 
* } 
*/ 
function containsCharsOnly(input,chars) { 
	for (var inx = 0; inx < input.value.length; inx++) { 
		if (chars.indexOf(input.value.charAt(inx)) == -1) 
			return false; 
	}//for 
	return true; 
} 

/** 
* ÀԷ°ª¿¡ ¼ýÀÚ¸¸ ÀÖ´ÂÁö üũ 
*/ 
function isNumber(input) { 
	var chars = "0123456789"; 
	return containsCharsOnly(input,number); 
} 
			

// ºñ¹Ð¹øÈ£ ÀÏÄ¡ üũ
function passcheck()
{
	if (document.theForm.mem_passwd.value !=document.theForm.mem_repasswd.value) {
			alert("ºñ¹Ð¹øÈ£°¡ ÀÏÄ¡ ÇÏÁö ¾Ê½À´Ï´Ù.");
			document.theForm.mem_passwd.value="";
			document.theForm.mem_repasswd.value="";
			document.theForm.mem_passwd.focus();
	}  
}

// E-MAIL üũ
function emailcheck(obj)
{
		chk = true;
		for(i=0; i<obj.value.length; i++)
		{
			if(obj.value.charAt(i)=='@')
			{
				chk = false;
					break;
			}
		}
		if(chk)
		{
			alert('The email address that you have provided is incorrect. Please check the address again.');
			obj.focus();
			return false;
		}
}

/*-------------------------------------------------------------------------
 f_chkEmail()
 Spec     : °£´ÜÇÑ Email üũ
 Argument : (document.form_name.input_name)
 Return   : boolean
 Example  : if(f_chkEmail(document.chb.obj) == false) return;
-------------------------------------------------------------------------*/
function f_chkEmail(obj) {
    var num   = 0;
    var num_1 = 0;
    var email = obj.value;
    for ( i=0; i<email.length; i++ ){
	    if (email.charAt(i) == '@') num++;
		if (email.charAt(i) == '.') num_1++;
    }
    if (num != 1 || num_1 == 0) {
		alert("¡¼ ÀԷ¿À·ù ¡½: E-mail ÀÔ·ÂÀÌ À߸ø µÇ¾ú½À´Ï´Ù.");
		obj.select();
		return false;
    }
}