字段清除Script

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<!--Two steps to installing this script-->
<!--1)Insert below in HEAD section of your page-->

<script language="Javascript">
<!--

//This credit must stay intact
//Script by Java-Scripts.net and http://wsabstract.com

function doClear(theText) {
if (theText.value == theText.defaultValue) {
theText.value = ""
}
}
//-->
</script>

<!--2)Add the following onFocus event into your form field, as follows-->

<form>
<input type="text" size=15 value="Enter name" onFocus="doClear(this)">
</form>