function contactAction(type) { var msg = ""; if (document.addForm.name.value == "") { msg += "- your name\n"; } if (document.addForm.email.value == "" && document.addForm.mobile.value == "") { msg += "- your email and/or mobile\n"; } if (msg != "") { alert("Please provide us with the following information:\n\n" + msg); } else { document.addForm.submitType.value = type; document.addForm.action = "contactAction.cfm"; document.addForm.submit(); } }