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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title></title>
<script type="text/javascript">
function getLenght(o, strMsg) {
if (o != null) {
var maxLen = o.maxLength;
var iLen = o.value.length;
var oMsg = document.getElementById(strMsg);
oMsg.innerText = maxLen - iLen;
}
}
</script>
</head>
<body>
<input id="txtMsg" type="text" maxlength="10" onkeyup="getLenght(this,'sLen')" onkeydown="getLenght(this,'sLen')" /><span
id="sLen" ></span>
</body>
</html>
String.prototype.len=function(){
return this.replace(/[^\x00-\xff]/g,"**").length;
}
function CheckLength(source, arguments)
{
var ValidStrLength=50;
if (arguments.Value.len()<=ValidStrLength)
arguments.IsValid = true;
else
arguments.IsValid = false;
}