close.gif 
ico2.gif 
<head>
<title>my jsp 'index.jsp' starting page</title>
<!--miniui-->
</head>
<body>
<div style="width:245px; height:21px;border:1px solid #a5acb5;">
<input type="text" id="muniComboBox1" style="width:208px;height:19px; float:left; border:0;">
<div style="width:15px;height:15px; overflow:hidden; cursor:pointer; padding:6px 0; float:left;" onClick="onCloseClick('muniComboBox1');"> <img src="close.gif"></div>
<div style="width:15px;height:15px;cursor:pointer; padding:1px;margin:1px 1px 0 0; float:right;" onClick="showComboboxData();"> <img src="icon2.gif"></div>
</div>
</body>
<script type="text/javascript">
function onCloseClick(e)
{
var obj = document.getElementById(e);
obj.value="";
}
function showComboboxData(e)
{
alert("No data found.");
}
</script>