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ÀÚ¹Ù½ºÅ©¸³Æ® ¹®ÀÚüũ!
/**
* Copyright (c) 2000 by LG-EDS Systems Inc
* All rights reserved.
*
* ÀÚ¹Ù½ºÅ©¸³Æ® °øÅëÇÔ¼ö
*
* ÁÖÀÇ: ¾Æ·¡ÀÇ ¸ðµç ¸Þ¼Òµå´Â ÀÔ·ÂÆûÀÇ ÇʵåÀ̸§(myform.myfield)À»
*       ÆĶó¹ÌÅÍ·Î ¹Þ´Â´Ù. ÇʵåÀÇ °ª(myform.myfield.value)ÀÌ ¾Æ´ÔÀ»
*       À¯³äÇÒ °Í.
*
* @version 1.1, 2000/10/06
* @author ¹ÚÁ¾Áø(JongJin Park), ecogeo@dreamwiz.com
*/


/**
* ÀԷ°ªÀÌ NULLÀÎÁö üũ
*/
function isNull(input) {
    if (input.value == null || input.value == "") {
        return true;
    }
    return false;
}

/**
* ÀԷ°ª¿¡ ½ºÆäÀ̽º ÀÌ¿ÜÀÇ ÀǹÌÀÖ´Â °ªÀÌ ÀÖ´ÂÁö üũ
* ex) if (isEmpty(form.keyword)) {
*         alert("°Ë»öÁ¶°ÇÀ» ÀÔ·ÂÇϼ¼¿ä.");
*     }
*/
function isEmpty(input) {
    if (input.value == null || input.value.replace(/ /gi,"") == "") {
        return true;
    }
    return false;
}

/**
* ÀԷ°ª¿¡ ƯÁ¤ ¹®ÀÚ(chars)°¡ ÀÖ´ÂÁö üũ
* ƯÁ¤ ¹®ÀÚ¸¦ Çã¿ëÇÏÁö ¾ÊÀ¸·Á ÇÒ ¶§ »ç¿ë
* ex) if (containsChars(form.name,"!,*&^%$#@~;")) {
*         alert("À̸§ Çʵ忡´Â Ư¼ö ¹®ÀÚ¸¦ »ç¿ëÇÒ ¼ö ¾ø½À´Ï´Ù.");
*     }
*/
function containsChars(input,chars) {
    for (var inx = 0; inx < input.value.length; inx++) {
       if (chars.indexOf(input.value.charAt(inx)) != -1)
           return true;
    }
    return false;
}

/**
* 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;
    }
    return true;
}

/**
* ÀԷ°ªÀÌ ¾ËÆĺªÀÎÁö üũ
* ¾Æ·¡ isAlphabet() ºÎÅÍ isNumComma()±îÁöÀÇ ¸Þ¼Òµå°¡
* ÀÚÁÖ ¾²ÀÌ´Â °æ¿ì¿¡´Â var chars º¯¼ö¸¦
* global º¯¼ö·Î ¼±¾ðÇÏ°í »ç¿ëÇϵµ·Ï ÇÑ´Ù.
* ex) var uppercase = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
*     var lowercase = "abcdefghijklmnopqrstuvwxyz";
*     var number    = "0123456789";
*     function isAlphaNum(input) {
*         var chars = uppercase + lowercase + number;
*         return containsCharsOnly(input,chars);
*     }
*/
function isAlphabet(input) {
    var chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
    return containsCharsOnly(input,chars);
}

/**
* ÀԷ°ªÀÌ ¾ËÆĺª ´ë¹®ÀÚÀÎÁö üũ
*/
function isUpperCase(input) {
    var chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
    return containsCharsOnly(input,chars);
}

/**
* ÀԷ°ªÀÌ ¾ËÆĺª ¼Ò¹®ÀÚÀÎÁö üũ
*/
function isLowerCase(input) {
    var chars = "abcdefghijklmnopqrstuvwxyz";
    return containsCharsOnly(input,chars);
}

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

/**
* ÀԷ°ªÀÌ ¾ËÆĺª,¼ýÀÚ·Î µÇ¾îÀÖ´ÂÁö üũ
*/
function isAlphaNum(input) {
    var chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";
    return containsCharsOnly(input,chars);
}

/**
* ÀԷ°ªÀÌ ¼ýÀÚ,´ë½Ã(-)·Î µÇ¾îÀÖ´ÂÁö üũ
*/
function isNumDash(input) {
    var chars = "-0123456789";
    return containsCharsOnly(input,chars);
}

/**
* ÀԷ°ªÀÌ ¼ýÀÚ,ÄÞ¸¶(,)·Î µÇ¾îÀÖ´ÂÁö üũ
*/
function isNumComma(input) {
    var chars = ",0123456789";
    return containsCharsOnly(input,chars);
}

/**
* ÀԷ°ªÀÌ »ç¿ëÀÚ°¡ Á¤ÀÇÇÑ Æ÷¸Ë Çü½ÄÀÎÁö üũ
* ÀÚ¼¼ÇÑ format Çü½ÄÀº ÀÚ¹Ù½ºÅ©¸³Æ®ÀÇ 'regular expression'À» ÂüÁ¶
*/
function isValidFormat(input,format) {
    if (input.value.search(format) != -1) {
        return true; //¿Ã¹Ù¸¥ Æ÷¸Ë Çü½Ä
    }
    return false;
}

/**
* ÀԷ°ªÀÌ À̸ÞÀÏ Çü½ÄÀÎÁö üũ
* ex) if (!isValidEmail(form.email)) {
*         alert("¿Ã¹Ù¸¥ À̸ÞÀÏ ÁÖ¼Ò°¡ ¾Æ´Õ´Ï´Ù.");
*     }
*/
function isValidEmail(input) {
//    var format = /^(\S+)@(\S+)\.([A-Za-z]+)$/;
    var format = /^((\w|[\-\.])+)@((\w|[\-\.])+)\.([A-Za-z]+)$/;
    return isValidFormat(input,format);
}

/**
* ÀԷ°ªÀÌ ÀüÈ­¹øÈ£ Çü½Ä(¼ýÀÚ-¼ýÀÚ-¼ýÀÚ)ÀÎÁö üũ
*/
function isValidPhone(input) {
    var format = /^(\d+)-(\d+)-(\d+)$/;
    return isValidFormat(input,format);
}

/**
* ÀԷ°ªÀÇ ¹ÙÀÌÆ® ±æÀ̸¦ ¸®ÅÏ
* ex) if (getByteLength(form.title) > 100) {
*         alert("Á¦¸ñÀº ÇÑ±Û 50ÀÚ(¿µ¹® 100ÀÚ) ÀÌ»ó ÀÔ·ÂÇÒ ¼ö ¾ø½À´Ï´Ù.");
*     }
* Author : Wonyoung Lee
*/
function getByteLength(input) {
    var byteLength = 0;
    for (var inx = 0; inx < input.value.length; inx++) {
        var oneChar = escape(input.value.charAt(inx));
        if ( oneChar.length == 1 ) {
            byteLength ++;
        } else if (oneChar.indexOf("%u") != -1) {
            byteLength += 2;
        } else if (oneChar.indexOf("%") != -1) {
            byteLength += oneChar.length/3;
        }
    }
    return byteLength;
}

/**
* ÀԷ°ª¿¡¼­ ÄÞ¸¶¸¦ ¾ø¾Ø´Ù.
*/
function removeComma(input) {
    return input.value.replace(/,/gi,"");
}

/**
* ¼±ÅÃµÈ ¶óµð¿À¹öÆ°ÀÌ ÀÖ´ÂÁö üũ
*/
function hasCheckedRadio(input) {
    if (input.length > 1) {
        for (var inx = 0; inx < input.length; inx++) {
            if (input[inx].checked) return true;
        }
    } else {
        if (input.checked) return true;
    }
    return false;
}

/**
* ¼±ÅÃµÈ Ã¼Å©¹Ú½º°¡ ÀÖ´ÂÁö üũ
*/
function hasCheckedBox(input) {
    return hasCheckedRadio(input);
}
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