css里写javascript

<style type="text/css"> .showCSS{ event:expression( onmouseover = function()           {                this.style.backgroundColor='#f0f0f0'            }, onmouseout = function()           {                this.style.backgroundColor='#ffffff'            }         ) } </style>       <style> tr{background-color:expression((this.rowIndex%2==0)?"blue":"red");clg:expression(onmouseover=function(){this.style.backgroundColor=(this.style.backgroundColor!='gray'?'gray':((this.rowIndex%2==0)?"blue":"red"))},onmouseout=function(){this.style.backgroundColor=(this.style.backgroundColor!='gray'?'gray':((this.rowIndex%2==0)?"blue":"red"))})} li{background-color:expression(var ulo = this.parentNode;);clg:expression(onmouseover=function(){this.style.backgroundColor=(this.style.backgroundColor!='gray'?'gray':((this.rowIndex%2==0)?"blue":"red"))},onmouseout=function(){this.style.backgroundColor=(this.style.backgroundColor!='gray'?'gray':((this.rowIndex%2==0)?"blue":"red"))})} </style> <table width="200" cellpadding="0" cellspacing="2" border="0" id="t1">     <tr>       <td>&nbsp;</td>     </tr>     <tr>       <td>&nbsp;</td>     </tr>     <tr>       <td>&nbsp;</td>     </tr>     <tr>       <td>&nbsp;</td>     </tr>     <tr>       <td>&nbsp;</td>     </tr>     <tr>       <td>&nbsp;</td>     </tr>     <tr>       <td>&nbsp;</td>     </tr>     <tr>       <td>&nbsp;</td>     </tr> </table> <ul style="list-style-type:none;"> <li >按时大礼服机</li> <li>按时大礼服机</li> <li>按时大礼服机</li> <li>按时大礼服机</li> <li>按时大礼服机</li> <li>按时大礼服机</li> <li>按时大礼服机</li> <li>按时大礼服机</li> <li>按时大礼服机</li> <li>按时大礼服机</li> </ul>