文本框內顯示文本提示，當點擊后提示消失！
實現代碼：
[xhtml] view plain
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<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>test</title>
<script type="text/javascript"><!--
var account_tip = "描述";
//鼠標進入文本時間
function init_value() {
var bs = document.getElementById("Txt_remark");
if (bs.value.length == 0 || bs.value == account_tip) {
bs.value = "";
}
}
//鼠標移出
function init_over() {
var bs = document.getElementById("Txt_remark");
if (bs.value.length == 0 || bs.value == account_tip) {
bs.value = account_tip;
}
}
// --></script>
</head>
<body>
<input ID="Txt_remark" value="描述" onfocus="init_value()" onblur="init_over()" />
</body>
</html>