
    //번호만 들어오는지 체크하는 함수
    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;
    }
    
    //영문만 들어오는지 체크하는 함수
    function check_eng(str_data)
    {
		error = false;
		check_data = str_data.value;

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

    //들어온값이 공백과 Null일경우를 체크하는 함수
    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;
    }
    
    //바이트 크기 검사하는 함수
    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;
	}
	
	//유효한 날짜인지를 검사하는 함수
	function DayCheck( obj )
	{
		error = true;
		current = false;

		if( obj.length != 8 )
			return error;
		
		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" )
			return error;
		
		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)
			return error;
		
		if( month == "1" || month == "3" || month == "5"|| month == "7" || month == "8" || month == "10" || month == "12" )
		{
			if(parseInt( day ) > 31)
				return error;
		}
		else if(month == "2")
		{
			if( parseInt( year ) % 4 == 0 && parseInt( year ) % 100 != 0 || parseInt( year ) % 400 == 0 )
			{
				if( parseInt( day ) > 29 )
					return error;
			}
			else if( parseInt( day ) > 28 )
				return error;
		}
		else if( parseInt( day ) > 30 )
			return error;

		return current;
	}
	
	//시간 체크하는 함수(24시 형태)
	function TimeCheck( obj )
	{
		error = true;
		current = false;
		
		if ( obj.length != 4 )
			return error;
			
		var hour = obj.substring( 0, 2 );
		var minute = obj.substring( 2, 4 );
		
		if( hour.substring( 0, 1 ) == "0" )
			hour = hour.substring( 1, 2 );
		
		if( minute.substring( 0, 1 ) == "0" )
			minute = minute.substring( 1, 2 );
		
		if ( hour > 23 )
			return error;
		else if ( minute > 59 )
			return error;
		else
			return current;
	}
	
	function MM_reloadPage(init)
	{  //reloads the window if Nav4 resized
		if (init==true) with (navigator) {if ((appName=="Netscape")&&(parseInt(appVersion)==4)) {
			document.MM_pgW=innerWidth; document.MM_pgH=innerHeight; onresize=MM_reloadPage; }}
		else if (innerWidth!=document.MM_pgW || innerHeight!=document.MM_pgH) location.reload();
	}

	MM_reloadPage(true);

	function MM_swapImgRestore() { //v3.0
		var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
	}

	function MM_preloadImages() { //v3.0
		var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
		var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
		if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
	}

	function MM_findObj(n, d) { //v4.0
		var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
		d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
		if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
		for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
		if(!x && document.getElementById) x=document.getElementById(n); return x;
	}

	function MM_swapImage() { //v3.0
		var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
		if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
	}
	
	//이미지 보여주는 함수
	function catswindows( name, width, height, title ) 
	{
		var winheight = 100;
		var winwidth = 100;
		var cat = null;
		step=30;
		ImgObj = null;

		ImgObj = new Image();
		ImgObj.src = name;
		
		if ( ImgObj.width <= width )
			width = ImgObj.width;
			
		if ( ImgObj.height <= height )
			height = ImgObj.height;

		if ( !document.layers && !document.all && !document.getElementById )
		{
			paramstp = "height=" + height + ", width=" + width + ", top=6, left=6, scrollbars=1, menubar=0, toolbar=0, resizable=1";
			cat = window.open( "", "cat", paramstp );
			oldstr = "<h" + "tml>\n<t" + "itle>" + title + "</t" + "itle>\n<bo" + "dy background=" + name + "</b" + "ody>\n</h" + "tml>";
			cat.document.write( oldstr );
	
			if (cat.focus) {
				cat.focus();
			}
	
			return;
		}
	
		LeftPosition = (screen.width)?(screen.width-width)/2:100;
		TopPosition = (screen.height)?(screen.height-height)/2:100;
	
		if (document.layers) {
			paramstp = "height=" + height + ", width=" + width + ", top=" + TopPosition + ",left=" + LeftPosition + ", scrollbars=1, menubar=0, toolbar=0, resizable=1";
		}
		else {
			paramstp = "height=" + winheight + ", width=" + winwidth + ", top=" + TopPosition + ", left=" + LeftPosition + ", scrollbars=1, menubar=0, toolbar=0, resizable=1";
		}
	
		cat = window.open( "", "cat", paramstp );
	
		if (document.all) {
			string0 = "<h" + "tml>\n<t" + "itle>" + title + "</t" + "itle>\n<bo" + "dy topmargin=0 leftmargin=0 bgcolor=white onClick='window.close()'>\n";
			string1 = "<d" + "iv id='errtxt' style='position:absolute;width:100%;top:45%;text-align:center;font-family:Comic Sans MS;font-size:16px;color:red;font-weight:bold;visibility:hidden'>\nERROR!!! Please try again\n</d" + "iv>\n" + "<sc" + "ript>\n";
			string2 = "function textLooping() { animInterval = setInterval( 'textLooping()', 500 ); }\n";
			string3 = "</s" + "cript>\n";
			string4 = "<ta" + "ble height=" + height + " width=" + width + ">\n<t" + "r>\n<t" + "d align=center valign=middle><im" + "g src='" + name + "' border=0></t" + "d>\n</t" + "r>\n</t" + "able>\n</b" + "ody>\n</h" + "tml>";
		}
	
		cat.document.writeln( string0 );
		cat.document.writeln( string1 );
		cat.document.writeln( string2 );
		cat.document.writeln( string3 );
		cat.document.writeln( string4 );
	
		if ( document.all )
		{
			x=y=step;
			while (x | y) {
				cat.resizeBy (x, y);
				if ( cat.document.body.clientWidth >= width) x=0;
				if ( cat.document.body.clientHeight >= height) y=0;
			}
		}
	
		if(cat.focus){cat.focus();}
	
		return;
	}
	
	//숫자를 컴마 붙여서 리턴해준다.
    function price_comma( inja )
    {
        var returnStr = "";

        if ( inja.value == "" )
            return returnStr;

        var price = inja.value;

        var i;
        var length;

        var comma = price.indexOf( ".", 0 );

        if ( comma != -1 )
            length = price.substring( 0, comma ).length;
        else
            length = price.length;

        if ( length == 0 )
            return returnStr;

        for( i = 0 ; i < length ; i++ )
        {
            if ( ( i != length - 1 ) && ( ( length - i ) % 3 == 0 ) )
            {
                returnStr += price.charAt( i - 1 );
                returnStr += ",";
            }
            else
            {
                returnStr += price.charAt( i - 1 );
            }
        }

        returnStr += price.charAt( i - 1 );

        if ( comma != -1 )
            returnStr = returnStr + price.substring( comma, price.length );

        if ( returnStr.substring( 0, 1 ) == "," )
            returnStr = returnStr.substring( 1, returnStr.length );

        return returnStr;
    }
    
    //콤마를 없애는 함수
    function rem_comma( inja )
	{
		result_sub_price = "";

		if ( inja.value == "" )
			return result_sub_price;

		sub_price = inja.value;

		for( i = 0 ; i < sub_price.length ; i++ )
		{
			if ( sub_price.charAt( i ) != "," )
				result_sub_price = result_sub_price + sub_price.charAt( i );
		}

		return result_sub_price;
	}