表格的前景色怎么加啊

Question

请不吝赐教

Answer 1

我想当鼠标点击时出现前景色，可以把表格里的input遮住

Answer 2

<style>
    tr{
  bgcolor:expression(this.bgColor=((this.rowIndex)%2==0 )? 'gray' : '#gray');
  }
</style>
<SCRIPT language=JavaScript>
<!--
nereidFadeObjects = new Object();
nereidFadeTimers = new Object();
function nereidFade(object, destOp, rate, delta){
if (!document.all)
return
    if (object != "[object]"){  //do this so I can take a string too
        setTimeout("nereidFade("+object+","+destOp+","+rate+","+delta+")",0);
        return;
    }
    clearTimeout(nereidFadeTimers[object.sourceIndex]);
    diff = destOp-object.filters.alpha.opacity;
    direction = 1;
    if (object.filters.alpha.opacity > destOp){
        direction = -1;
    }
    delta=Math.min(direction*diff,delta);
    object.filters.alpha.opacity+=direction*delta;
    if (object.filters.alpha.opacity != destOp){
        nereidFadeObjects[object.sourceIndex]=object;
        nereidFadeTimers[object.sourceIndex]=setTimeout("nereidFade(nereidFadeObjects["+object.sourceIndex+"],"+destOp+","+rate+","+delta+")",rate);
    }
}// Flash Image Extension for Dreamwever ,by Yichun Yuan([email protected])
nereidFadeObjects = new Object();
nereidFadeTimers = new Object();
function nereidFade(object, destOp, rate, delta){
if (!document.all)
return
    if (object != "[object]"){  //do this so I can take a string too
        setTimeout("nereidFade("+object+","+destOp+","+rate+","+delta+")",0);
        return;
    }
    clearTimeout(nereidFadeTimers[object.sourceIndex]);
    diff = destOp-object.filters.alpha.opacity;
    direction = 1;
    if (object.filters.alpha.opacity > destOp){
        direction = -1;
    }
    delta=Math.min(direction*diff,delta);
    object.filters.alpha.opacity+=direction*delta;
    if (object.filters.alpha.opacity != destOp){
        nereidFadeObjects[object.sourceIndex]=object;
        nereidFadeTimers[object.sourceIndex]=setTimeout("nereidFade(nereidFadeObjects["+object.sourceIndex+"],"+destOp+","+rate+","+delta+")",rate);
    }
}function changeto(highlightcolor){
source=event.srcElement
if (source.tagName=="TR"||source.tagName=="TABLE")
return
while(source.tagName!="TD")
source=source.parentElement
if (source.style.backgroundColor!=highlightcolor&&source.id!="ignore")
source.style.backgroundColor=highlightcolor
}
function changeback(originalcolor){
if (event.fromElement.contains(event.toElement)||source.contains(event.toElement)||source.id=="ignore")
return
if (event.toElement!=source)
source.style.backgroundColor=originalcolor
}
//-->
</SCRIPT>
<table id="main_table">
<tr>
<td width="100" onmouseout="nereidFade(this,60,10,5)" onmouseover="nereidFade(this,100,10,5)" style="FILTER: alpha(opacity=50)">a </td>
<td width="100" onmouseout="nereidFade(this,60,10,5)" onmouseover="nereidFade(this,100,10,5)" style="FILTER: alpha(opacity=50)">b </td>
</tr>
<tr>
<td width="100" onmouseout="nereidFade(this,60,10,5)" onmouseover="nereidFade(this,100,10,5)" style="FILTER: alpha(opacity=50)">a </td>
<td width="100" onmouseout="nereidFade(this,60,10,5)" onmouseover="nereidFade(this,100,10,5)" style="FILTER: alpha(opacity=50)">b </td>
</tr>
<tr>
<td width="100" onmouseout="nereidFade(this,60,10,5)" onmouseover="nereidFade(this,100,10,5)" style="FILTER: alpha(opacity=50)">a </td>
<td width="100" onmouseout="nereidFade(this,60,10,5)" onmouseover="nereidFade(this,100,10,5)" style="FILTER: alpha(opacity=50)">b </td>
</tr>
<tr>
<td width="100" onmouseout="nereidFade(this,60,10,5)" onmouseover="nereidFade(this,100,10,5)" style="FILTER: alpha(opacity=50)">a </td>
<td width="100" onmouseout="nereidFade(this,60,10,5)" onmouseover="nereidFade(this,100,10,5)" style="FILTER: alpha(opacity=50)">b </td>
</tr>
</table>