function newXMLHTTP() {

		if(window.XMLHttpRequest) {
			try {
				xmlhttp = new XMLHttpRequest();
			} catch(e) {
				alert("XMLHTTP¸¦ ÃʱâÈ­ÇÒ ¼ö ¾ø½À´Ï´Ù.");
				return false;
			}//try
		} else if(window.ActiveXObject) {
			try {
				xmlhttp = new ActiveXObject("Msxml2.XMLHTTP");
			} catch(e) {
				try {
					xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
				} catch(e) {
					alert("XMLHTTP¸¦ ÃʱâÈ­ÇÒ ¼ö ¾ø½À´Ï´Ù.");
					return false;
				}//try
			}//try
		} else {
			alert("XMLHTTP¸¦ ÃʱâÈ­ÇÒ ¼ö ¾ø½À´Ï´Ù.");
			return false;
		}//if
		return xmlhttp;
	}

	function callbackerror(xmlhttp) {
		alert("ÀÚ·á Àü¼Û Áß ¿À·ù°¡ ¹ß»ýÇß½À´Ï´Ù:\r\n\r\n"+xmlhttp.status+" "+xmlhttp.statusText);
	}//callbackerror



// À̺κРºÎÅÍ ¸Þ¼Òµå¸¦ Ãß°¡Çسª°¨


	//¾ÆÀ̵ð Áߺ¹È®ÀÎ ----------------------------------------------------
	function getUserIdCheck() {
		var userid = document.getElementById("user_id");

		// XMLHTTP °´Ã¼ »ý¼º
		var xmlhttp = newXMLHTTP();
		var params = "act=idCheckAjax&user_id=" + escape(userid.value);

		if (userid.value.trim().length > 3 && (userid.value.isUserid() || userid.value.isEmail())) {

				var request_url = "/common/ajax.do";

				xmlhttp.open("POST", request_url, true);
				xmlhttp.setRequestHeader("Content-Type","application/x-www-form-urlencoded");
				xmlhttp.send(params);
				xmlhttp.onreadystatechange = setUserIdCheck;

		} else {

			if (userid.value.trim().length > 3 && !(userid.value.isUserid() || userid.value.isEmail()) ) {
				document.getElementById("useridchktext").innerHTML = "<font style='font-size:11px; font-weight:bold; color:RED;'>¾ÆÀ̵𸦠¹Ù¸£°Ô ÀÔ·ÂÇØ Áֽʽÿä.</font>";
			} else {
				document.getElementById("useridchktext").innerHTML = "<font style='font-size:11px; font-weight:bold; color:RED;'>¾ÆÀ̵𸦠ÀÔ·ÂÇØ Áֽʽÿä.</font>";
			}//if
			userid.focus();
		}//if

	}//getUserIdCheck

	function setUserIdCheck() {
		if(xmlhttp.readyState == 4) {
			if(xmlhttp.status == 200) {
				var response = xmlhttp.responseText;

				if (document.getElementById("user_id").value != "woot" && document.getElementById("user_id").value != "help" && document.getElementById("user_id").value != "master" && document.getElementById("user_id").value != "info" && document.getElementById("user_id").value != "wootkr" && response.trim() == "true") {
					document.getElementById("useridchktext").innerHTML = "<font style='font-size:11px; font-weight:bold; color:#FF6600;'>»ç¿ëÇÒ¼ö ÀÖ½À´Ï´Ù.</font>";
					document.getElementById("userchk").value = "true";
					//document.getElementById("userpwd1").focus();
				} else {
					document.getElementById("useridchktext").innerHTML = "<font style='font-size:11px; font-weight:bold; color:#FF6600;'>»ç¿ëÇÒ¼ö ¾ø½À´Ï´Ù.</font>";
					document.getElementById("userchk").value = "false";
					document.getElementById("user_id").focus();
				}//if

			} else {
				callbackerror(xmlhttp);
			}//if
		}//if
	}//setUserIdCheck
	
	
	


//	//¾ÆÀ̵ð Áߺ¹È®ÀÎ ----------------------------------------------------
//	function getJuminNumCheck() {
//		var userid = document.getElementById("user_id");
//
//		// XMLHTTP °´Ã¼ »ý¼º
//		var xmlhttp = newXMLHTTP();
//		var params = "act=JuminNum&jumin_number=" + escape(jumin_number_1.value) + escape(jumin_number_2.value);
//
//		if (userid.value.trim().length > 3 && (userid.value.isUserid() || userid.value.isEmail())) {
//
//				var request_url = "/common/ajax.do";
//
//				xmlhttp.open("POST", request_url, true);
//				xmlhttp.setRequestHeader("Content-Type","application/x-www-form-urlencoded");
//				xmlhttp.send(params);
//				xmlhttp.onreadystatechange = setUserIdCheck;
//
//		} else {
//
//			if (userid.value.trim().length > 3 && !(userid.value.isUserid() || userid.value.isEmail()) ) {
//				document.getElementById("useridchktext").innerHTML = "<font style='font-size:11px; font-weight:bold; color:RED;'>¾ÆÀ̵𸦠¹Ù¸£°Ô ÀÔ·ÂÇØ Áֽʽÿä.</font>";
//			} else {
//				document.getElementById("useridchktext").innerHTML = "<font style='font-size:11px; font-weight:bold; color:RED;'>¾ÆÀ̵𸦠ÀÔ·ÂÇØ Áֽʽÿä.</font>";
//			}//if
//			userid.focus();
//		}//if
//
//	}//getJuminNumCheck
//
//	function setJuminNumCheck() {
//		if(xmlhttp.readyState == 4) {
//			if(xmlhttp.status == 200) {
//				var response = xmlhttp.responseText;
//
//				if (document.getElementById("user_id").value != "woot" && document.getElementById("user_id").value != "help" && document.getElementById("user_id").value != "master" && document.getElementById("user_id").value != "info" && document.getElementById("user_id").value != "wootkr" && response.trim() == "true") {
//					document.getElementById("useridchktext").innerHTML = "<font style='font-size:11px; font-weight:bold; color:#FF6600;'>»ç¿ëÇÒ¼ö ÀÖ½À´Ï´Ù.</font>";
//					document.getElementById("userchk").value = "true";
//					//document.getElementById("userpwd1").focus();
//				} else {
//					document.getElementById("useridchktext").innerHTML = "<font style='font-size:11px; font-weight:bold; color:#FF6600;'>»ç¿ëÇÒ¼ö ¾ø½À´Ï´Ù.</font>";
//					document.getElementById("userchk").value = "false";
//					document.getElementById("user_id").focus();
//				}//if
//
//			} else {
//				callbackerror(xmlhttp);
//			}//if
//		}//if
//	}//setJuminNumCheck