//¹ÙÀÌÆ® ¼ö üũ, ¿µ¹®1, ÇѱÛ2
function get_byte_count(value){
	var name_len = value.length;

	var byte_len = 0;
	for(var i=0; i < name_len; i++){ 
		c = value.charCodeAt(i); 
		if(  ( 0xAC00 <= c && c <= 0xD7A3 ) || ( 0x3131 <= c && c <= 0x318E )  ) {     //ÇѱÛÀÏ °æ¿ì 
			byte_len += 2;
		}
		else{	//ÇÑ±Û ÀÌ¿Ü
			byte_len ++;
		}
	}
	return byte_len;
}

//¾Õ/µÚ °ø¹é Á¦°Å
String.prototype.trim = function(str) { 
	str = this != window ? this : str; 
	return str.replace(/^\s+/g,'').replace(/\s+$/g,''); 
}