// Check for valid email address: look for @ and .
function isEmail(elm) {
    if (elm.value.indexOf("@") != "-1" &&
        elm.value.indexOf(".") != "-1") {
        return true;
    }
    else {
        return false;
    }
}

// Check for blank fields
function isFilled(elm) {
    if (elm.value == "" || elm.value == null) {
        return false;
    }
    else {
        return true;
    }
}
// Check entire form
function isReady(form) {

    if (isFilled(form.Name) == false) {        // A name?
        alert("Please enter your name.");
        form.Name.focus();
        return false;
    }
	
    if (isFilled(form.Phone) == false) {         // A phone?
        alert("Please enter your phone number.");
        form.Phone.focus();
        return false;
    }
	
    if (isEmail(form.Email) == false) {          // A real email address?
        alert("Please enter a valid email address.");
        form.Email.focus();
        return false;
    }
	
   
    
    return true;
}