function feedback() {
	var returnval = true;
	if (0 == document.feed.realname.value.length) {returnval=false;}
	if (0 == document.feed.comments.value.length) {returnval=false;}  
	if (document.feed.email.value == "") {returnval=false;} 
	var reg = /^([A-Za-z0-9_\-\.])+\@([A-Za-z0-9_\-\.])+\.([A-Za-z]{2,4})$/;
  	var address = document.feed.email.value;
    if(reg.test(address) == false) {
     	returnval=false;
   	}
	if (returnval==false){alert("Please complete all fields with valid responses");}
	return returnval;
}