js 对表格进行各种操作

<TABLE width="500" border="1" id="t" onKeyUp="sum(this)" onClick="setPos(this)">
      <TR>
            <TD><div contentEditable>项目\部门</div></TD>
            <TD><div contentEditable>部门1</div></TD>
            <TD><div contentEditable>部门2</div></TD>
            <TD><div contentEditable>部门3</div></TD>
            <TD><div contentEditable>统计</div></TD>
      </TR>
      <TR>
            <TD><div contentEditable>货物1</div></TD>
            <TD><div contentEditable>0</div></TD>
            <TD><div contentEditable>0</div></TD>
            <TD><div contentEditable>0</div></TD>
            <TD><div>0</div></TD>
      </TR>
      <TR>
            <TD><div contentEditable>货物2</div></TD>
            <TD><div contentEditable>0</div></TD>
            <TD><div contentEditable>0</div></TD>
            <TD><div contentEditable>0</div></TD>
            <TD><div>0</div></TD>
      </TR>
      <TR>
            <TD><div contentEditable>货物3</div></TD>
            <TD><div contentEditable>0</div></TD>
            <TD><div contentEditable>0</div></TD>
            <TD><div contentEditable>0</div></TD>
            <TD><div>0</div></TD>
      </TR>
      <TR>
            <TD><div contentEditable>货物4</div></TD>
            <TD><div contentEditable>0</div></TD>
            <TD><div contentEditable>0</div></TD>
            <TD><div contentEditable>0</div></TD>
            <TD><div>0</div></TD>
      </TR>
      <TR>
            <TD><div contentEditable>货物5</div></TD>
            <TD><div contentEditable>0</div></TD>
            <TD><div contentEditable>0</div></TD>
            <TD><div contentEditable>0</div></TD>
            <TD><div>0</div></TD>
      </TR>
      <TR>
            <TD><div contentEditable>总计</div></TD>
            <TD><div>0</div></TD>
            <TD><div>0</div></TD>
            <TD><div>0</div></TD>
            <TD><div>0</div></TD>
      </TR>
</TABLE>
<input type="button" value="加一行" onClick="insertRow(document.getElementById('t'))">
<input type="button" value="加一列" onClick="insertCell(document.getElementById('t'))">
<input type="button" value="删除行" onClick="deleteRow(document.getElementById('t'))">
<input type="button" value="删除列" onClick="deleteCell(document.getElementById('t'))">
<input type="button" value="正序排列" onClick="ascRow(document.getElementById('t'))">
<input type="button" value="反序排列" onClick="descRow(document.getElementById('t'))">
<br>
<input type="button" value="横向正序排列" onClick="ascCell(document.getElementById('t'))">
<input type="button" value="横向反序排列" onClick="descCell(document.getElementById('t'))">
<input type="button" value="全部数据统计" onClick="getSum(document.getElementById('t'),'total')">
<input type="text" value="0" name="total" style="width:50">
<SCRIPT LANGUAGE="JavaScript">
<!--
var currRow="0";
var currCell="0";
function getSum(obj,objName){
      var sum=0;
      for(var i=1;i<obj.rows.length-1;i++){
            for(var j=1;j<obj.rows[i].cells.length;j++){
                  sum+=parseInt(obj.rows[i].cells[j].innerText);
            }
      }
      document.getElementsByName(objName)[0].value=sum;
}
//正序排列
function ascCell(obj){
      if(currCell>=1&&currRow>=1){
            var len=obj.rows[0].cells.length;
            for(var j=0;j<len;j++){
                  var order=0;
                  for(var i=1;i<len-2;i++){
                        if(parseInt(obj.rows[currRow].cells[i].innerText)>parseInt(obj.rows[currRow].cells[i+1].innerText)){
                              for(var k=0;k<obj.rows.length;k++){
                                    var tmp=obj.rows[k].cells[i].innerHTML;
                                    obj.rows[k].cells[i].innerHTML=obj.rows[k].cells[i+1].innerHTML;
                                    obj.rows[k].cells[i+1].innerHTML=tmp;
                              }
                              order++;
                        }
                  }
                  len--;
                  if(order==0){
                        break;
                  }
            }
      }
      clear();
}
//反序排列
function descCell(obj){
      if(currCell>=1&&currRow>=1){
            var len=obj.rows[0].cells.length;
            for(var j=0;j<len;j++){
                  var order=0;
                  for(var i=1;i<len-2;i++){
                        if(parseInt(obj.rows[currRow].cells[i].innerText)<parseInt(obj.rows[currRow].cells[i+1].innerText)){
                              for(var k=0;k<obj.rows.length;k++){
                                    var tmp=obj.rows[k].cells[i].innerHTML;
                                    obj.rows[k].cells[i].innerHTML=obj.rows[k].cells[i+1].innerHTML;
                                    obj.rows[k].cells[i+1].innerHTML=tmp;
                              }
                              order++;
                        }
                  }
                  len--;
                  if(order==0){
                        break;
                  }
            }
      }
      clear();
}
//正序排行
function ascRow(obj){
      if(currCell>=1){
            var rows=obj.rows;
            var len=rows.length-2;
            for(var j=0;j<=rows.length-2;j++){
                  var order=0;
                  for(var i=1;i<len;i++){
                        if(parseInt(rows[i].cells[currCell].innerText)>parseInt(rows[i+1].cells[currCell].innerText)){
                              obj.moveRow(i,i+1);
                              order++;
                        }
                  }
                  len--;
                  if(order==0){
                        break;
                  }
            }
      }
      clear();
}
//反序排行
function descRow(obj){
      if(currCell>=1){
            var rows=obj.rows;
            var len=rows.length-2;
            for(var j=0;j<rows.length-2;j++){
                  var order=0;
                  for(var i=1;i<len;i++){
                        if(parseInt(rows[i].cells[currCell].innerText)<parseInt(rows[i+1].cells[currCell].innerText)){
                              obj.moveRow(i,i+1);
                              order++;
                        }
                  }
                  len--;
                  if(order==0){
                        break;
                  }
            }
      }
      clear();
}
//删除行
function deleteRow(obj){
      var rows=obj.rows.length;
      if(currRow>=1&&currRow<rows-1){
            obj.deleteRow(currRow);
      }
      clear();
      averCol(obj);
}
//删除列
function deleteCell(obj){
      if(currCell>=1&&currCell<obj.rows[0].cells.length-1){
            for(var i=0;i<obj.rows.length;i++){
                  obj.rows[i].deleteCell(currCell);
            }
      }
      clear();
      averCol(obj);
}
function averCol(obj){
var wh=obj.width;
var cells=obj.rows[0].cells;
for(var i=0;i<cells.length;i++){
cells[i].width=Math.ceil(wh/cells.length);
}
}
//添加行
function insertRow(obj){
      if(currRow>=0&&currRow<obj.rows.length-1){
            var maxCell=obj.rows[0].cells.length;
            obj.insertRow(currRow+1);
            for(var i=0;i<maxCell;i++){
                  obj.rows[currRow+1].insertCell(i);
                  obj.rows[currRow+1].cells[i].innerHTML="<div contentEditable>0</div>";
            }
            clear();
            averCol(obj);
            chnBgcolor(obj,currRow,"ffffff");
      }
}
//添加列
function insertCell(obj){
      if(currCell&&currCell!=obj.rows[0].cells.length-1){
            for(var i=0;i<obj.rows.length;i++){
                  obj.rows[i].insertCell(currCell+1);
                  obj.rows[i].cells[currCell+1].innerHTML="<div contentEditable>0</div>";
            }
            clear();
            averCol(obj);
            chnBgcolor(obj,currRow,"ffffff");
      }
}
function check(obj){
      var k=parseInt(obj.innerText);
      if(isNaN(k)){
            obj.childNodes[0].innerText=0;
            return 0;
      }else{
            obj.childNodes[0].innerText=k;
            return k;
      }
}
//统计
function sum(obj){
      var o=event.srcElement;
      var total=0;
      var tindex=obj.rows.length-1;
      if(o.parentElement.tagName=="TD"&&o.parentElement.cellIndex>=1&&o.parentElement.parentElement.rowIndex>=1){
            var index=o.parentElement.cellIndex;
            var pindex=o.parentElement.parentElement.rowIndex;
            for(var i=1;i<tindex;i++){
                  var num=check(obj.rows[i].cells[index]);
                  total=parseInt(total)+num;
            }
            var total1=0;
            for(i=1;i<obj.rows[pindex].cells.length-1;i++){
                  total1+=check(obj.rows[pindex].cells[i]);
            }
            obj.rows[pindex].cells(obj.rows[pindex].cells.length-1).innerText=total1;
            obj.rows[tindex].cells[index].innerText=total;
            obj.rows[tindex].cells(obj.rows[0].cells.length-1).innerText=addAll(obj);
      }
      setPos(obj);
}
function chnBgcolor(obj,index,color){
for(var i=0;i<obj.rows.length;i++){
            if(i==index){
                  obj.rows[i].bgColor=color;
            }else{
                  obj.rows[i].bgColor="ffffff";
            }
      }
}
function setPos(obj){
var o=event.srcElement;
if(o.tagName=="DIV"){
currRow=o.parentElement.parentElement.rowIndex;
currCell=o.parentElement.cellIndex;
      chnBgcolor(obj,currRow,"dedede");
}else if(o.tagName=="TD"){
currRow=o.parentElement.rowIndex;
currCell=o.cellIndex;
}else{
currRow=obj.rows.length-1;
      currCeil=obj.rows[0].cells.length-1;
}
}
function clear(){
currRow=0;
currCell=0;
}
function addAll(obj){
var total=0;
for(var i=1;i<obj.rows[0].cells.length-1;i++){
      total+=parseInt(obj.rows[obj.rows.length-1].cells[i].innerText);
}
return total;
}
//-->
</SCRIPT>