//¹øÈ£¸¸ µé¾î¿À´ÂÁö üũÇÏ´Â ÇÔ¼ö
    function check_number(num_data)
    {
		error = false;
		check_data = num_data.value;

		for (i=0; i<check_data.length; i++)
		{
			if ((check_data.charAt(i) < "0") || (check_data.charAt(i) > "9"))
			{
				error = true;
				break;
			}
		}
	
		return error;
    }


    //µé¾î¿Â°ªÀÌ °ø¹é°ú NullÀÏ°æ¿ì¸¦ üũÇÏ´Â ÇÔ¼ö
    function remove_blank(field_data)
    {
        org_data = field_data.value;
        res_data = "";
        error = false;

        for (i=0; org_data.length > i; i++)
        {
          temp_ch = org_data.charAt(i);

          if (temp_ch != " ")
          {
            res_data = org_data.substring(i, org_data.length);
            break;
          }
        }

        for (i=res_data.length-1; 0 <= i; i--)
        {
          temp_ch = res_data.charAt(i);

          if (temp_ch != " ")
          {
            res_data = res_data.substring(0, i+1);
            break;
          }
        }

        if (res_data.length == 0)
            error = true;
        
        return error;
    }

    //ÀÔ·ÂµÈ °ªÀ» trimÇÏ´Â ÇÔ¼ö
    function data_trim(org_data)
    {
        res_data = "";

        for (i=0; org_data.length > i; i++)
        {
          temp_ch = org_data.charAt(i);

          if (temp_ch != " ")
          {
            res_data = org_data.substring(i, org_data.length);
            break;
          }
        }

        for (i=res_data.length-1; 0 <= i; i--)
        {
          temp_ch = res_data.charAt(i);

          if (temp_ch != " ")
          {
            res_data = res_data.substring(0, i+1);
            break;
          }
        }
        
        return res_data;
    }
    
    function change_image( image_name , image_path )
    {
        image_name.src = image_path;
    }
    
    //¹ÙÀÌÆ® Å©±â °Ë»çÇÏ´Â ÇÔ¼ö
    function cal_byte( aquery, limit_length )
	{
		var tmpStr;
		var temp = 0;
		var onechar;
		var tcount;
		tcount = 0;
		error = false;

		tmpStr = new String( aquery.value );
		temp = tmpStr.length;

		for ( k = 0 ; k < temp ; k++ )
		{
			onechar = tmpStr.charAt( k );

			if ( escape( onechar ).length > 4 )
				tcount += 2;
			else if ( onechar != '\r' )
				tcount++;
		}

		if( tcount > limit_length )
			error = true;
		else
			error = false;
			
		return error;
	}

   	 function open_event1()
     { 
     	url = "/event/ohev1001r1.jsp";
     	window.open(url, "open_event1", "menubar=0, toolbar=0, scrollbars=1, width=500, height=454" );
     }

	//À¯È¿ÇÑ ³¯Â¥ÀÎÁö¸¦ °Ë»çÇÏ´Â ÇÔ¼ö
	function DayCheck(obj)
	{
		if( obj.length != 8 )
		{
			alert(" ³¯Â¥ Çü½ÄÀÌ Æ²¸³´Ï´Ù. ´Ù½Ã ÀÔ·ÂÇØÁÖ¼¼¿ä.");	
			return;
		}
		
		var year = obj.substring(0,4);
		var month = obj.substring(4,6);
		var day = obj.substring(6,8);
		var	sum = 0;
		var i;
		
		if(day == "00")
		{
			alert("0ÀÏÀº Á¸ÀçÇÏÁö ¾Ê½À´Ï´Ù.");
			return false;
		}
		
		if(month.substring(0,1) == "0")
		{
			month = month.substring(1,2);
		}
		
		if(day.substring(0,1) == "0")
		{
			day = day.substring(1,2);
		}
		
		if(month > 12)
		{
			alert(month + "¿ùÀº Á¸ÀçÇÏÁö ¾Ê½À´Ï´Ù.");
			return false;
		}
		
		if(month == "1" || month == "3" || month == "5"|| month == "7" || month == "8" || month == "10" || month == "12")
		{
			if(parseInt(day) > 31)
			{
				alert(month + "¿ùÀº 31ÀϱîÁö¸¸ Á¸ÀçÇÕ´Ï´Ù.");
				return false;
			}
		}
		else if(month == "2")
		{
			if( parseInt(year) % 4 == 0 && parseInt(year) % 100 != 0 || parseInt(year) % 400 == 0)
			{
				if( parseInt(day) > 29 )
				{
					alert(year + "³âÀÇ" + month + "¿ùÀº 29ÀϱîÁö¸¸ Á¸ÀçÇÕ´Ï´Ù.");
					return false;
				} 
			}
			else
			{
				if( parseInt(day) > 28 )
				{
					alert(year + "³âÀÇ " + month + "¿ùÀº 28ÀϱîÁö¸¸ Á¸ÀçÇÕ´Ï´Ù.");
					return false;
				} 
			} 
		
		}
		else
		{
			if( parseInt(day) > 30 )
			{
				alert(month + "¿ùÀº 30ÀϱîÁö¸¸ Á¸ÀçÇÕ´Ï´Ù.");
				return false;
			}
		}
		return true;
	}
	
	//ÀÏÁÖÀÏ ÈÄÀÇ ³¯Â¥¸¦ °è»êÇÏ´Â ÇÔ¼ö
	function NextWeek(obj)
	{
		var year = obj.substring(0,4);
		var month = obj.substring(4,6);
		var day = obj.substring(6,8);
	
		if( parseInt( day ) < 23 )
		{
			obj = parseInt(obj) + 6;
		}
		else
		{
			var m = 0;
			m = parseInt(month);
	
			if( m==1 || m==3 || m==5 || m==7 || m==8 || m==10 ) 
			{
				if( day < 26 )
				{
					month = parseInt( month );
					day = parseInt( day ) + 6;
				}
				else
				{
					month = parseInt( month ) + 1;
					day = parseInt( day ) + 6 - 31;
				}
			}
			else if( m==4 || m==6 || m==9 || m==11 )
			{
				if( day < 25 )
				{
					month = parseInt( month );
					day = parseInt( day ) + 6;
				}
				else
				{
					month = parseInt( month ) + 1;
					day = parseInt( day ) + 6 - 30;
				}
			}
			else if( m==12 )
			{
				if( day < 26 )
				{
					month = parseInt( month );
					day = parseInt( day ) + 6;
				}
				else
				{
					year = "" + (parseInt( year ) +1 );
					month = parseInt( month ) + 1 - 12;
					day = parseInt( day ) + 6 - 31;
					
				}
			}
			else if( parseInt( month ) == 2 )
			{
				if(   ( parseInt(year)%4 == 0) 
				   && ( parseInt(year)%100 != 0 )
				   || ( parseInt(year)%400 == 0 ) )
				{
					month = parseInt( month ) + 1;
					day = parseInt( day ) + 6 - 29;
				}
				else
				{
					month = parseInt( month ) + 1;
					day = parseInt( day ) + 6 - 28;
				}
			}
	
			if( parseInt(month) < 10 )
				month = "0" + month;
			
			if( parseInt(day) < 10 )
				day = "0" + day;
	
			obj = year + month + day;
		}
		return obj;
	}
                    
function real_login()
{
    if ( remove_blank( document.login_form.id ) )
    {
        alert( "ID´Â ¹Ýµå½Ã ÀÔ·ÂÇÏ¼Å¾ß ÇÕ´Ï´Ù." );
        document.login_form.id.value = "";
        document.login_form.id.focus();
        return;
    }
    else if ( remove_blank( document.login_form.passwd ) )
    {
        alert( "ºñ¹Ð¹øÈ£´Â ¹Ýµå½Ã ÀÔ·ÂÇÏ¼Å¾ß ÇÕ´Ï´Ù." );
        document.login_form.passwd.value = "";
        document.login_form.passwd.focus();
        return;
    }
    else
    {
        //document.login_form.action="/ohcm0002Svl";
        document.login_form.action="http://www.foodnara.com/ohcm0002Svl";  
        document.login_form.submit();
    }
}