function validate_missing(form){
	apos=fb_form.email.value.indexOf("@")
	dotpos=fb_form.email.value.lastIndexOf(".")
		
	if (fb_form.first_name.value == "")  {
    alert( "Enter your first name!" );
    fb_form.first_name.focus();
    return false 
	}
	
	if (fb_form.last_name.value == "")  {
    alert( "Enter your last name!" );
    fb_form.last_name.focus();
    return false 
	}
	
	if (fb_form.feed_back.value == "")  {
    alert( "Enter a topic for the feedback!" );
    fb_form.feed_back.focus();
    return false 
	}
	
	if (fb_form.subject.value == "")  {
    alert( "Enter a subject for the feedback!" );
    fb_form.subject.focus();
    return false 
	}
	
	if (apos<1||dotpos-apos<2)  {
    alert( "Email address invalid! Check email" );
    fb_form.email.focus();
    return false 
	}
		
	if (fb_form.comments.value == "")  {
    alert( "Enter a comment!" );
    fb_form.comments.focus();
    return false 
	}

 }

function set_focus(){
 document.fb_form.first_name.focus();
}