function email_onclick(emailText) {
    emailText.value="";
}

function SubmitEmail()
{
    var QueryString = "";
    var emailAddress = document.getElementById("email").value;
    
    if(emailAddress.length==0 || emailAddress=="Email Address")
    {
        alert("Please enter an email address.");
        return false;
    }
    
    if(checkMail(emailAddress)==false)
    {
        alert("The email address you entered is invalid. Please try again.");
        return false;
    }
    
	var formatElement = document.getElementById("format");
	if (formatElement == null)
	{
		var formatElements = document.getElementsByName("format");
		if (formatElements != null && formatElements.length > 0)
		{
			for (var i = 0; i < formatElements.length; ++i)
			{
				formatElement = formatElements[i];
				if (formatElement.checked)
					break;
			}
		}
	}
    var format = formatElement.value;
   
    QueryString = "E=" + emailAddress + "&F=" + format;
    Save_Subscriber(QueryString);
}

var xmlhttp=null;

function Save_Subscriber(QueryString)
{
    var URL = null;
    URL = "/AddSubscriber.jsp?" + QueryString;
    // code for Mozilla, etc.
    if (window.XMLHttpRequest)
    {
        xmlhttp=new XMLHttpRequest()
    }
    // code for IE
    else if (window.ActiveXObject)
    {
        xmlhttp=new ActiveXObject("Microsoft.XMLHTTP")
    }
    if (xmlhttp!=null)
    {
        xmlhttp.onreadystatechange=Generate_Response
        xmlhttp.open("GET",URL,true)
        xmlhttp.send(null)
    }
    else
    {
    alert("Your browser does not support XMLHTTP.")
    }
}

function Generate_Response()
{
    var ResponseText = "";
    // if xmlhttp shows "loaded"
    if (xmlhttp.readyState==4)
    {
    // if "OK"
        if (xmlhttp.status==200)
        {
            ResponseText += "<p><b>Hot Tips By Email</b></p>";
            ResponseText += xmlhttp.responseText;
            
            document.getElementById("SubscribeBox").innerHTML = "";
            document.getElementById("SubscribeBox").innerHTML = ResponseText;
        }
        else
        {
            alert("Problem retrieving data:" + xmlhttp.statusText)
        }
    }
}