JavaScript and DHTML Wizardry

Making sure a field is entered

	<SCRIPT LANGUAGE=JAVASCRIPT TYPE="TEXT/JAVASCRIPT">
	
		function validForm(myForm) {
			if (myForm.userName.value == "") {
				alert("You must enter a name")
				myForm.userName.focus()
				return false
			}
			return true
		}
		
	</SCRIPT>	
:
:
<FORM onSubmit="return validForm(this)" ACTION="someAction.cgi">
	Your name: <INPUT TYPE=TEXT SIZE=30 NAME="userName">
	<P><INPUT TYPE=SUBMIT VALUE="Submit"> <INPUT TYPE=RESET>
</FORM>