请问如何让一个表格的行移上鼠标是一种色,移走是另一种色,这种代码是什么,哪儿有例子,谢谢了!

<HTML><HEAD><TITLE>CREATE BY Yoinn@2003-11-11</TITLE><STYLE>
.TR_CUR {background:#223344}
.TR_DEF {background:#EFEFEF}
</STYLE>
</HEAD><SCRIPT LANGUAGE="JavaScript">
<!--
var CLS_TR_CUR = "TR_CUR";
var CLS_TR_DEF = "TR_DEF";
var CUR_TR_OBJ = null;function GetParentHtmlElement( objElement,strParentTagName )
{
    if( null != objElement )
    {
        if( objElement.tagName.toUpperCase() == strParentTagName.toUpperCase() ){
            objElement = objElement;
        }else{
            objElement = GetParentHtmlElement( objElement.parentElement,strParentTagName );
        }
    }
    return objElement;
}// &#65397;羹&#65393;&#65400;&#65412;&#65393;葭&#65429;&#65417;&#65387;
function TrunColor(the)
{
var oTr = GetParentHtmlElement( the,"TR" );
if( null != oTr ){
if( oTr == CUR_TR_OBJ ){
return;
} oTr.classNameBak = oTr.className;
oTr.className    = CLS_TR_CUR; if( null != CUR_TR_OBJ ){
CUR_TR_OBJ.className = CUR_TR_OBJ.classNameBak;
} CUR_TR_OBJ = oTr;
}
}//-->
</SCRIPT><BODY><h2 align="center"> RadioList </h2>
<TABLE width="80%" align="center" border="1" cellpadding="1" cellspacing="2" bordercolor="#CCCCCC">
<TR class="TR_DEF" onmouseover="TrunColor(this)">
<TD width="1"><INPUT TYPE="radio" NAME="R1" onclick="TrunColor(this)"></TD>
<TD width="25%">1</TD>
<TD width="25%">1</TD>
<TD width="25%">1</TD>
<TD width="25%">1</TD>
</TR>
<TR class="TR_DEF" onmouseover="TrunColor(this)">
<TD><INPUT TYPE="radio" NAME="R1" onclick="TrunColor(this)"></TD>
<TD>2</TD>
<TD>2</TD>
<TD>2</TD>
<TD>2</TD>
</TR>
<TR class="TR_DEF" onmouseover="TrunColor(this)">
<TD><INPUT TYPE="radio" NAME="R1" onclick="TrunColor(this)"></TD>
<TD>3</TD>
<TD>3</TD>
<TD>3</TD>
<TD>3</TD>
</TR>
<TR class="TR_DEF" onmouseover="TrunColor(this)">
<TD><INPUT TYPE="radio" NAME="R1" onclick="TrunColor(this)"></TD>
<TD>4</TD>
<TD>4</TD>
<TD>4</TD>
<TD>4</TD>
</TR>
<TR class="TR_DEF" onmouseover="TrunColor(this)">
<TD><INPUT TYPE="radio" NAME="R1" onclick="TrunColor(this)"></TD>
<TD>5</TD>
<TD>5</TD>
<TD>5</TD>
<TD>5</TD>
</TR>
<TR class="TR_DEF" onmouseover="TrunColor(this)">
<TD><INPUT TYPE="radio" NAME="R1" onclick="TrunColor(this)"></TD>
<TD>6</TD>
<TD>6</TD>
<TD>6</TD>
<TD>6</TD>
</TR>
<TR class="TR_DEF" onmouseover="TrunColor(this)">
<TD><INPUT TYPE="radio" NAME="R1" onclick="TrunColor(this)"></TD>
<TD>7</TD>
<TD>7</TD>
<TD>7</TD>
<TD>7</TD>
</TR>
<TR class="TR_DEF" onmouseover="TrunColor(this)">
<TD><INPUT TYPE="radio" NAME="R1" onclick="TrunColor(this)"></TD>
<TD>8</TD>
<TD>8</TD>
<TD>8</TD>
<TD>8</TD>
</TR>
</TABLE></BODY>
</HTML>