Forms >>> Validation Info.


		<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(){

		var 
		digits="0123456789"

		var 
		temp

		if
		(document.testform.Name.value=="")
		{

		alert("No 
		Name !")

		return
		false

		}

		if
		(document.testform.age.value=="")
		{

		alert("Invalid 
		Age !")

		return
		false

		}

		for
		(var 
		i=0;i<document.testform.age.value.length;i++){

		temp=document.testform.age.value.substring(i,i+1)

		if
		(digits.indexOf(temp)==-1){

		alert("Invalid 
		Age !")

		return
		false

		      
		}

		   
		}

		return
		true

		}

		// End -->

		</script>

		<FORM
		name="testform"
		onSubmit="return 
		validate()">

		Name:<input
		type="text"
		size=30
		name="Name">

		Age:<input
		type="text"
		size=3
		name="age">

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

		</FORM>