"-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">  

"http://www.w3.org/1999/xhtml">  

"Content-Type" content="text/html; charset=utf-8" />  

  

"javascript" src="jquery-1.7.1.min.js">  

    "0" width="800" style="border-collapse:collapse;" id="tb1">  

            "file" name="pic[]" />  

    "button" id="add" value="+" /> "button" id="minus" value="-" /> "button" id="empty" value="清空" />  

    "text/javascript">  

        $("#add").click(function(){  

            $("#tb1").append('');  

        })  

        $("#minus").click(function(){  

            var tbl_rows = Math.round((document.getElementById('tb1').rows.length));  

            if(tbl_rows>1) dealTableRows('tb1', 0, 1);  

        })  

        $("#empty").click(function(){  

            $("#tb1").empty();  

        })  

        function dealTableRows(tbl_id, opt, cellnum, str){  

            var tblObj = document.getElementById(tbl_id);  

            var newRow,newCell;  

            switch(opt){  

                case 1:/* 增加一行 */  

                    newRow = tblObj.insertRow(tblObj.rows.length);  

                    for(var i=0; i

                        newCell = newRow.insertCell(newRow.cells.length);  

                        newCell.innerHTML = str[i];  

                    }  

                    break ;  

                default :  

                    for(var j=0;j

                        tblObj.deleteRow(tblObj.rows.length-1);      

                    }              

                    break ;  

            }  

        }