<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN " "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd ">
<html xmlns= "http://www.w3.org/1999/xhtml ">
<head>
<meta http-equiv= "Content-Type " content= "text/html; charset=gb2312 " />
<title> 无标题文档 </title>
<script>
var _h=null
function hit(){
var e=event.srcElement
if(e.tagName!= "TD ")return;
if(!_h)_h=e.parentElement;
_h.style.backgroundColor= ' ';
_h.style.color= ' '
_h=e.parentElement;
_h.style.backgroundColor= '#f0dad2 '
_h.style.color= '#000 '
}
</script>
</head>
<body>
<table width= "100% " border= "1 " cellpadding= "0 " cellspacing= "0 " bordercolor= "#993333 " onmouseover= "hit() ">
<tr>
<td> </td>
<td> </td>
</tr>
<tr>
<td> <input name= "提交 " type= "submit " value= "1111 " disabled= "disabled "/> </td>
<td> <input name= " " type= "button " value= "1111 " disabled= "disabled " /> </td>
</tr>
</table>
</body>
</html>
先测试一下，为什么当鼠标快速来回滑过按钮的时候，会报错，但是当按钮上没有disabled送时候，就不会报错，请高手解决！！！
------解决方案--------------------
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN " "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd ">
<html xmlns= "http://www.w3.org/1999/xhtml ">
<head>
<meta http-equiv= "Content-Type " content= "text/html; charset=gb2312 " />
<title> 无标题文档 </title>
<script>
var _h=null
function hit(){
var e=event.srcElement;
if(!e) return;
if(e.tagName!= "TD ") return;
if(!_h)_h=e.parentElement;
_h.style.backgroundColor= ' ';
_h.style.color= ' '
_h=e.parentElement;
_h.style.backgroundColor= '#f0dad2 '
_h.style.color= '#000 '
}
</script>
</head>
<body>
<table width= "100% " border= "1 " cellpadding= "0 " cellspacing= "0 " bordercolor= "#993333 " onmouseover= "hit() ">
<tr>
<td> </td>
<td> </td>
</tr>
<tr>
<td> <input name= "提交 " type= "submit " value= "1111 " disabled= "disabled "/> </td>
<td> <input name= " " type= "button " value= "1111 " disabled= "disabled " /> </td>
</tr>
</table>
</body>
</html>