function check(online){
	if(document.online.chk1.checked == false){
		alert("¼öÁýÇÏ´Â °³ÀÎÁ¤º¸ Ç׸ñ¿¡ µ¿ÀÇÇÏ¼Å¾ß ÇÕ´Ï´Ù.");
		document.online.chk1.focus();
		return false;
	}

	if(document.online.chk2.checked == false){
		alert("°³ÀÎÁ¤º¸ ¼öÁý ¹× ÀÌ¿ë¸ñÀû¿¡ µ¿ÀÇÇÏ¼Å¾ß ÇÕ´Ï´Ù.");
		document.online.chk2.focus();
		return false;
	}

	if(document.online.chk3.checked == false){
		alert("°³ÀÎÁ¤º¸ º¸À¯ ¹× ÀÌ¿ë±â°£¿¡ µ¿ÀÇÇÏ¼Å¾ß ÇÕ´Ï´Ù.");
		document.online.chk3.focus();
		return false;
	}

	if(!online.p_name.value.length){
		alert("´ã´çÀÚ¸íÀ» ³Ö¾îÁÖ¼¼¿ä.");
		online.p_name.focus();
		return false;
	}	
	if(!online.c_tell1.value.length){
		alert("ÇÚµåÆù ¾ÕÀÚ¸®¸¦ ³Ö¾îÁÖ¼¼¿ä.");
		online.c_tell1.focus();
		return false;
	}
		if(isNaN(online.c_tell1.value)) {
			alert('ÀÌ Ç׸ñ¿¡´Â ¼ýÀÚ¸¸ ÀԷ°¡´ÉÇÕ´Ï´Ù.');
			online.c_tell1.value = "";
			online.c_tell1.focus();
			return false;
		}
		
	if(!online.c_tell2.value.length){
		alert("ÇÚµåÆù Áß°£ÀÚ¸®¸¦ ³Ö¾îÁÖ¼¼¿ä.");
		online.c_tell2.focus();
		return false;
	}
		if(isNaN(online.c_tell2.value)) {
		alert('ÀÌ Ç׸ñ¿¡´Â ¼ýÀÚ¸¸ ÀԷ°¡´ÉÇÕ´Ï´Ù.');
		online.c_tell2.value = "";
		online.c_tell2.focus();
		return false;
		}
	if(!online.c_tell3.value.length){
		alert("ÇÚµåÆù µÞÀÚ¸®¸¦ ³Ö¾îÁÖ¼¼¿ä.");
		online.c_tell3.focus();
		return false;
	}
		if(isNaN(online.c_tell3.value)) {
		alert('ÀÌ Ç׸ñ¿¡´Â ¼ýÀÚ¸¸ ÀԷ°¡´ÉÇÕ´Ï´Ù.');
		online.c_tell3.value = "";
		online.c_tell3.focus();
		return false;
		}
	
	if(!online.mail.value.length){
		alert("À̸ÞÀÏÀ» ³Ö¾îÁÖ¼¼¿ä.");
		online.mail.focus();
		return false;
	}
	  var mail = document.online.mail.value;
	  var mailEx1 = /^([A-Za-z0-9_]{1,15})(@{1})([A-Za-z0-9_]{1,15})(.{1})([A-Za-z0-9_]{2,10})(.{1}[A-Za-z]{2,10})?(.{1}[A-Za-z]{2,10})?$/;
	  if ( mail != "" && mail.search(mailEx1) == -1 ) {
		alert("¸ÞÀÏ ÁÖ¼Ò¸¦ Á¦´ë·Î ÀÔ·ÂÇÏ¿© Áֽʽÿä!!");
		document.online.mail.focus();
		return false;
	  }
	
	
	if(!online.content.value.length){
		alert("¹®ÀÇ ³»¿ëÀ» ³Ö¾îÁÖ¼¼¿ä.");
		online.content.focus();
		return false;
	}
}
function ischeck(a){
var ck=document.getElementById(a)
ck.checked=true
}
function nocheck(a){
var ck=document.getElementById(a)
ck.checked=false
}