关于Javascript

onClick="Javascript:tablestyle(-1);
关键就是如何保存上次的值.实际上-1应该用一个变量表示,可这步不知道如何写了.请帮帮忙了.

解决方案 »

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<script>
function aa(){
var a=window.document.table1.a.backgroundColor=rgb:#ffffff
             }
function bb(){
var a=window.document.table1.a.backgroundColor=rgb:#000000
             }
}
</script>
<table id="table1">
<tr>
<td id=a>aaaaaaaaaaa</td>
</tr>
</table>
<img src="hei.jpg" onclick=aa()>
<img src="hong.jpg" onclick=bb()>
呵呵,我搞定了.
<script>
var  index;
index=0;
function index1()
{
document.all.table1[index].style.backgroundColor="";
index--;
tablestyle();
}
function index2()
{
document.all.table1[index].style.backgroundColor="";
index++;
tablestyle();
}
function tablestyle()
{
var indexcount=document.all.table1.length-1;
if(index<0)
{
index=indexcount;
}
if(index>indexcount)
{
index=0;
}
document.all.table1[index].style.backgroundColor="#eee7F7";
}
</script>
</head><body>
<a href="javascript:getwindow('cxzl.asp',150,200);">asdfasdf</a>
<table width="100%"  border="0">
  <tr>
    <td  colspan="2"><table width="100%"  border="1" cellspacing="0">
        <tr id="table1">
          <td> </td>
        </tr>
        <tr id="table1">
          <td> </td>
        </tr>
        <tr id="table1">
          <td> </td>
        </tr>
        <tr id="table1">
          <td> </td>
        </tr>
        <tr id="table1">
          <td> </td>
        </tr>
        <tr id="table1">
          <td> </td>
        </tr>
    </table></td>
  </tr>
  <tr>
    <td><P id="index1" onClick="Javascript:index1();" style="cursor:hand">上一条</a></td>
    <td><P id="index2" onClick="Javascript:index2();" style="cursor:hand">下一条</a></td>
  </tr>
</table>
<html>
<head>
<script>
var curRow=null;   //全局行号
function selectRow(tr1){
if(curRow)
curRow.bgColor="#FFFFFF";
tr1.bgColor="#eee7F7";
curRow=tr1;
}function preRow(){
var tbRows=table1.rows;
if(curRow){
var curRowIndex=curRow.rowIndex;
if(curRowIndex==0) tbRows[tbRows.length-1].click();
else tbRows[curRowIndex-1].click();
}else
tbRows[0].click();
//#eee7F7
}
function nextRow(){
var tbRows=table1.rows;
if(curRow){
var curRowIndex=curRow.rowIndex;
if(curRowIndex==tbRows.length-1) tbRows[0].click();
else tbRows[curRowIndex+1].click();
}else
tbRows[0].click();
}
</script>
</head>
<body>
<table width="100%"  border="0">
  <tr>
    <td  colspan="2">
<table id="table1" width="100%"  border="1" cellspacing="0" style="border-collapse:collapse " bordercolor="#333333">
         <tr onClick="selectRow(this)"><td> </td></tr>
         <tr onClick="selectRow(this)"><td> </td></tr>
         <tr onClick="selectRow(this)"><td> </td></tr>
         <tr onClick="selectRow(this)"><td> </td></tr>
         <tr onClick="selectRow(this)"><td> </td></tr>
         <tr onClick="selectRow(this)"><td> </td></tr>
     </table>
</td>
  </tr>
  <tr>
    <td align="right"><a style="cursor:hand " onClick="preRow()"><font color="blue">上一条</font></a></td>
    <td><a onClick="nextRow()" style="cursor:hand "><font color="blue">下一条</font></a></td>
  </tr>
</table>
</html>