function board_check(form) {

		if(form.name.value=="") {
			alert("À̸§À» ÀÔ·ÂÇØ ÁÖ¼¼¿ä");
			form.name.focus();
			return false;
		}
		if(form.subject.value=="") {
			alert("Á¦¸ñÀ» ÀÔ·ÂÇØ ÁÖ¼¼¿ä");
			form.subject.focus();
			return false;
		}
		if(form.pw.value=="") {
			alert("ºñ¹Ð¹øÈ£¸¦ ÀÔ·ÂÇØ ÁÖ¼¼¿ä");
			form.pw.focus();
			return false;
		}
		if(form.content.value=="") {
			alert("³»¿ëÀ» ÀÔ·ÂÇØ ÁÖ¼¼¿ä");
			form.content.focus();
			return false;
		}
		if(form.email.value.length!=0){
			var fo = form.email ;
		  if(fo.value.indexOf("@") < 0) {
	  	  alert("À̸ÞÀÏÁÖ¼Ò Çü½ÄÀÌ Æ²¸³´Ï´Ù. ex)email@hanmail.net");
	  	  fo.value="";
	  	  fo.focus();
	  	  return false;
  	  }
	
	    if(fo.value.indexOf(".") < 0) {
	  	  alert("À̸ÞÀÏ µµ¸ÞÀÎ ÁÖ¼Ò°¡ Ʋ¸³´Ï´Ù. ex)email@hanmail.net");
	  	  fo.value="";
	  	  fo.focus();
	  	  return false;
	    }
	  }		
		return true;

}


function board_check2(form) {

		if(form.subject.value=="") {
			alert("Á¦¸ñÀ» ÀÔ·ÂÇØ ÁÖ¼¼¿ä");
			form.subject.focus();
			return false;
		}

		if(form.content.value=="") {
			alert("³»¿ëÀ» ÀÔ·ÂÇØ ÁÖ¼¼¿ä");
			form.content.focus();
			return false;
		}


}

function board_check3(form) {

		if(form.name.value=="") {
			alert("A name please be entered");
			form.name.focus();
			return false;
		}
		if(form.subject.value=="") {
			alert("A subject please be entered.");
			form.subject.focus();
			return false;
		}
		if(form.pw.value=="") {
			alert("A password please be entered");
			form.pw.focus();
			return false;
		}
		if(form.content.value=="") {
			alert("Contents please be entered.");
			form.content.focus();
			return false;
		}
		if(form.email.value.length!=0){
			var fo = form.email ;
		  if(fo.value.indexOf("@") < 0) {
	  	  alert("An e-mail address format was wrong. ex)email@hanmail.net");
	  	  fo.value="";
	  	  fo.focus();
	  	  return false;
  	  }
	
	    if(fo.value.indexOf(".") < 0) {
	  	  alert("An E-mail domain address is wrong. ex)email@hanmail.net");
	  	  fo.value="";
	  	  fo.focus();
	  	  return false;
	    }
	  }		
		return true;

}