Forms >>> Validation Num Or 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

		function 
		validate(field)
		{

		var 
		valid =
		
		"abcdefghijklmnopqrstuvwxyz0123456789";

		var 
		ok =
		"yes";

		var 
		temp;

		for
		(var 
		i=0; 
		i<field.value.length; 
		i++)
		{

		temp 
		=
		""
		+ 
		field.value.substring(i, 
		i+1);

		if
		(valid.indexOf(temp)
		==
		"-1") 
		ok =
		"no";

		}

		if
		(ok
		==
		"no")
		{

		alert("Invalid 
		entry!  Only characters and numbers are accepted!");

		field.focus();

		field.select();

		   
		}

		}

		//  End -->

		</script>

		<form
		onSubmit="http://yourwebsiteaddresshere.com/script.cgi">

		<input 
		type=text
		name="entry"
		onBlur="validate(this)">

		<br>

		<input
		type=submit
		value="Submit 
		Form">

		</form>