<script language="javascript">
//显示指定id的html控件
function displayHtml(controlId) {
var objHtmlControl = document.getElementById(controlId);
objHtmlControl.style.display = "inline";
//或者
//objHtmlControl.style.display = "block";
}
//隐藏指定id的html控件
function hideHtml(controlId) {
var objHtmlControl = document.getElementById(controlId);
objHtmlControl.style.display = "none";
}
</script>