function validate(form) {
    fail =""
//    fail += v_Pass(form.tel.value)
//    fail += v_Email(form.email.value)
	if (fail == "") return true
    else { alert(fail); return false }
}

function v_Pass(field) {

	if (/[^0-9_\-\+ ]/.test(field)) return "only 0-9, +, - and _ are valid."
    else return ""
}

function v_Email(field) {

    if 	(!((field.indexOf(".") > 0) && (field.indexOf("@") > 0)) || /[^a-zA-Z0-9.@_\-]/.test(field))
		
		return "The Email address seems invalid."
    else return ""
}