// JavaScript Document
<!-- 
function validate(form) { 
   

    if (form1.email.value.length == 0) 
    { 
        alert("Email Address is a required field.") 
        form1.email.focus() 
        return false 
    } 
	
	if (form1.email.value.indexOf("@") == -1) 
    { 
        alert("Please enter a valid e-mail address."); 
        form1.email.focus(); 
        return false; 
    } 


} 
//-->