function Chk_login() {
	var var_identitynumber1 = document.frm_login.txt_identitynumber1.value;
	var var_identitynumber2 = document.frm_login.txt_identitynumber2.value;
	var var_password = document.frm_login.txt_password.value;

	if(var_identitynumber1 == "") {
		alert("Áֹεî·Ï¹øÈ£¸¦ ÀÔ·ÂÇØ ÁÖ¼¼¿ä");
		document.frm_login.txt_identitynumber1.focus();
		return false;
	}
	else if(var_identitynumber1.length < 6) {
		alert("Áֹεî·Ï¹øÈ£ ¾ÕÀÚ¸®´Â 6ÀÚ¸®ÀÔ´Ï´Ù. ´Ù½Ã ÀÔ·ÂÇØ ÁÖ¼¼¿ä");
		document.frm_login.txt_identitynumber1.focus();
		return false;
	}
	else if(var_identitynumber2 =="") {
		alert("Áֹεî·Ï¹øÈ£¸¦ ÀÔ·ÂÇØ ÁÖ¼¼¿ä");
		document.frm_login.txt_identitynumber2.focus();
		return false;
	}
	else if(var_identitynumber2.length < 7) {
		alert("Áֹεî·Ï¹øÈ£ µÞÀÚ¸®´Â 7ÀÚ¸®ÀÔ´Ï´Ù. ´Ù½Ã ÀÔ·ÂÇØ ÁÖ¼¼¿ä");
		document.frm_login.txt_identitynumber2.focus();
		return false;
	}
	else if(var_password == "") {
		alert("ºñ¹Ð¹øÈ£¸¦ ÀÔ·ÂÇØ ÁÖ¼¼¿ä");
		document.frm_login.txt_password.focus();
		return false;
	}
	else if(var_password.length < 1) {
		alert("ºñ¹Ð¹øÈ£´Â 8ÀÚ¸® ÀÌ»óÀ» ÀÔ·ÂÇØÁÖ¼¼¿ä");
		document.frm_login.txt_password.focus();
		return false;
	}
	document.frm_login.submit();
}

var isNN = (navigator.appName.indexOf("Netscape")!=-1); 

function autoTab(input,len, e) { 

	var keyCode = (isNN) ? e.which : e.keyCode; 
	var filter = (isNN) ? [0,8,9] : [0,8,9,16,17,18,37,38,39,40,46]; 
	if(input.value.length >= len && !containsElement(filter,keyCode)) { 
		input.value = input.value.slice(0, len); 
		input.form[(getIndex(input)+1) % input.form.length].focus(); 
	} 
	
	function containsElement(arr, ele) { 
		var found = false, index = 0; 
		while(!found && index < arr.length) 
		if(arr[index] == ele) 
		found = true; 
		else 
		index++; 
		return found; 
	} 
	
	function getIndex(input) { 
		var index = -1, i = 0, found = false; 
		while (i < input.form.length && index == -1) 
		if (input.form[i] == input)index = i; 
		else i++; 
		return index; 
		} 
		return true; 
} 
		
function Chk_logout() {
	document.frm_login.logout.value = 1;
	document.frm_login.submit();
}