<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
<HEAD>
<TITLE> New Document </TITLE>
<META NAME="Generator" CONTENT="EditPlus">
<META NAME="Author" CONTENT="">
<META NAME="Keywords" CONTENT="">
<META NAME="Description" CONTENT="">
<script>
function IsNum(intNum)
{
var re = /[^0-9.]/;
var IsNum = false;
if(intNum.match(re)==null)
IsNum = true;
return IsNum;
}
var bolAlert = true;
function EnterNum(objField)
{
if(!IsNum(objField.value))
{
objField.value ="";
alert("please enter a number");
}
}
</script>
</HEAD>
<BODY>
onpropertychange
<input type"text" onpropertychange="javascript:EnterNum(this);" id="dd" />
</BODY>
</HTML>
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