<html>
<head>
<title> </title>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<style type="text/css">
*{margin:0;padding:0;}
</style>
<script type="text/javascript" language="javascript">
function sAlert(){
var str = " , (A), (B), (A) (C) (D)。";
str=str.replace(/\(/g,"<font color='red'>(XXX)</font>");
document.getElementById("testDIV").innerHTML = str;
}
// ( (
function regInput()
{
value= document.getElementById("testValue").value;
value=value.replace(/\(/g,'\(');
//alert(value);
document.getElementById("testValue").value=value
}
</script>
</head>
<body>
<input id="testValue" onkeyup="regInput()" >
<div id="testDIV"></div>
<script type="text/javascript" language="javascript">
sAlert();
</script>
</body>
</html>