一个输入框变色的效果怎么做?

背景中那个绕圈圈滴亮点儿是 flash 
http://armory.wowtaiwan.com.tw/images/searchbox.swf代码如下，L@_@K<!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>
  <title> new document </title>
  <meta name="generator" content="editplus" />
  <meta name="author" content="[email protected]" />
  <meta name="keywords" content="javascript" />
  <meta name="description" content="for javascript region of csdn" />
    <style type="text/css">
.highlight {
    border: 1px solid red;
}
    </style>
  <script type="text/javascript">
  <!--
function checkClear() {
if (document.formSearch.searchQuery.value == document.formSearch.searchQuery.defaultValue)
document.formSearch.searchQuery.value = "";
}function checkBlur() {
if (document.formSearch.searchQuery.value == "")
document.formSearch.searchQuery.value = document.formSearch.searchQuery.defaultValue;
}
  //-->
  </script>
 </head> <body>
    <form name="formSearch">
        <input maxlength="72" size="16" onmouseover="this.className = 'highlight'" onmouseout="this.className = ''" onBlur="javascript: checkBlur();" onFocus="javascript: checkClear();" value="&#25628;&#23563;The Armory" name="searchQuery" type="text">
    </form>
 </body>
</html>