function contact() {

    valid = true;
	alert_text = "Please enter the following information:\n"

	if( document["contactform"].name.value == "" ) {
        alert_text += "\nName";
        valid = false;
    }
   if( document["contactform"].email.value == "" ) {
        alert_text += "\nEmail Address";
        valid = false;
    } else {
		if( !isValidEmail(document["contactform"].email.value) ) {
			alert("Please enter a valid email address.");
			return false;
		}
	}
   if( document["contactform"].phone.value == "" ) {
        alert_text += "\nPhone";
        valid = false;
    }
	
	if(!valid) {
		alert(alert_text);
		return false;
	}

    return true;
}

function isValidEmail(str) { 
	return (str.indexOf(".") > 2) && (str.indexOf("@") > 0);
}