<TABLE>
<TR>
<TD>test</TD><TD>test</TD>
</TR>
<TR id=tr1>
<TD>test</TD><TD>test</TD>
</TR>
<TR>
<TD>test</TD><TD>test</TD>
</TR>
</TABLE>
<SCRIPT LANGUAGE="JavaScript">
<!--
var colors=["red","black","yellow","blue","violet","green"];
var i=0;
setInterval("tr1.style.color=colors[(i++)%colors.length]",500)
//-->
</SCRIPT>
<TR>
<TD>test</TD><TD>test</TD>
</TR>
<TR id=tr1>
<TD>test</TD><TD>test</TD>
</TR>
<TR>
<TD>test</TD><TD>test</TD>
</TR>
</TABLE>
<SCRIPT LANGUAGE="JavaScript">
<!--
var colors=["red","black","yellow","blue","violet","green"];
var i=0;
setInterval("tr1.style.color=colors[(i++)%colors.length]",500)
//-->
</SCRIPT>
<span id="colorline" name="colorline"></span>
<SCRIPT LANGUAGE="JavaScript">
<!--
var red=0;
var green=0;
var blue=0; function getColor()
{
red=(red<256)? ((green>=256)? red+5:red):0;
green=(green<256)? ((blue>=256)? green+5:green):0;
blue=(blue<256)? blue+5:0;
document.all.colorline.style.color=(blue + (green * 256) + (red * 65536)); document.all.colorline.innerHTML="<b>Color Test:<input type=txet size=3 id=colorbox style='border:#000000 1px solid' disabled>";
document.all.colorline.innerHTML+="<br><ul>";
document.all.colorline.innerHTML+="<li><span style='color:#ff0000'>REB:"+red+"</span></li>";
document.all.colorline.innerHTML+="<li><span style='color:#00ff00'>GREEN:"+green+"</span></li>";
document.all.colorline.innerHTML+="<li><span style='color:#0000ff'>BLUE:"+blue+"</span></li>";
document.all.colorline.innerHTML+="</ul>"; document.all.colorbox.style.backgroundColor=(blue + (green * 256) + (red * 65536));
}
window.setInterval("getColor()",1);
//-->
</SCRIPT>
<span id=test style="color:green">test color</span>
<script>
function testcolor()
{
document.all.item("test").style.color="red";
}
</script>
<input type=button value=changecolor onclick="testcolor()">
-----------------------
你可以通过javascript实现更丰富的视觉效果