Forms >>> Validation Char.


		<script 
		language="javascript"
		type="text/javascript">

		/* Visit http://www.yaldex.com/ 
		for full source code

		and get more free JavaScript, CSS and DHTML scripts! */

		<!-- Begin

		var 
		mikExp =
		/[$\\@\\\#%\^\&\*\(\)\[\]\+\_\{\}\`\~\=\|]/;

		function 
		dodacheck(val)
		{

		var 
		strPass = 
		val.value;

		var 
		strLength = 
		strPass.length;

		var 
		lchar = 
		val.value.charAt((strLength)
		-
		1);

		if(lchar.search(mikExp)
		!=
		-1)
		{

		var 
		tst = 
		val.value.substring(0,
		(strLength)
		-
		1);

		val.value
		= 
		tst;

		   
		}

		}

		function 
		doanothercheck(form)
		{

		if(form.value.length
		<
		1)
		{

		alert("Please 
		enter something.");

		return
		false;

		}

		if(form.value.search(mikExp)
		==
		-1)
		{

		alert("Correct 
		Input");

		return
		false;

		}

		else
		{

		alert("Sorry, 
		but the following characters\n\r\n\r@ $ % ^ & * # ( ) [ ] \\ { + } ` ~ 
		=  | \n\r\n\rare not allowed!\n");

		form.select();

		form.focus();

		return
		false;

		}

		alert("Correct 
		Input");

		return
		false;

		}

		//  End -->

		</script>

		<form
		name=xyz
		onSubmit="return 
		doanothercheck(this.txtTerm);">

		<input 
		type="text"
		name="txtTerm"
		size="35"
		maxlength="50"
		value=""
		onKeyUp="javascript:dodacheck(xyz.txtTerm);">

		<br>

		<input
		type=submit
		value=Check>

		</form>