var flen = 0;
        function add_file(fileNum)
        {
            var upload_count = fileNum;
            if (flen >= upload_count)
            {
                alert("이 게시판은 "+upload_count+"개 까지만 파일 업로드가 가능합니다.");
                return;
            }
 
            var objTbl;
            var objRow;
            var objCell;
            if (document.getElementById){
                objTbl = document.getElementById("variableFiles");
            }else{
                objTbl = document.all["variableFiles"];
			}
            objRow = objTbl.insertRow(objTbl.rows.length);
            objCell = objRow.insertCell(0);
		
            if(arrFile[flen]){
            objCell.innerHTML = "<div class='tbm1'><label for='file"+flen+"'>파 일 "+flen+"</label><input type='file' class='ftext w300' id='file"+flen+"' name='bf_file[]' />"+arrFile[flen]+"</div>";
			}else{
			objCell.innerHTML = "<div class='tbm1'><label for='file"+flen+"'>파 일 "+flen+"</label><input type='file' class='ftext w300' id='file"+flen+"' name='bf_file[]' /></div>";
			}

            flen++;
        }
 
        function del_file()
        {
            var objTbl = document.getElementById("variableFiles");
			if(arrFileNum < flen){
				objTbl.deleteRow(objTbl.rows.length - 1);
				flen--;
			}
        }