function rsshide()
{
document.getElementById("rss").style.display='none';
}
function rssshow()
{
document.getElementById("feedback").style.display='none';
document.getElementById("rss").style.display='block';
}
function feedbackshow()
{
document.getElementById("rss").style.display='none';
document.getElementById("feedback").style.display='block';
}

function feedbackhide()
{
document.getElementById("feedback").style.display='none';
}


about_url = "unknown url";
if (typeof window.parent.location.href == 'string') {
  about_url = window.parent.location.href; 
}


// content-newsatcisco@cisco.com
var linkObj = document.getElementById("feedback_link");
var x = 'content' + "-" + 'newsatcisco' + "yyy" + "cisco.com";
x = x.replace(/yyy/g,'@');
linkObj.href = "mailto:" + x + "?subject=Feedback regarding: " + about_url;
linkObj.innerHTML = x;


document.forms["iframe_form"].feedback_regarding_url.value = about_url;

var domain = "blogs.cisco.com/cgi-bin/nc3.0";
if (document.location.href.match(/pr-tools.cisco\.com/)) {
  domain = "pr-tools.cisco.com/nologin-bin";
}
var edit_form = document.getElementById("iframe_form_id");
edit_form.setAttribute("action", "http://"+domain+"/newsatcisco_nc30_feedback_email.pl");
//alert(edit_form.getAttribute("action"));

function send_email() {

  var comment_email = document.getElementById("comment_email");
  var comment_message = document.getElementById("comment_message");

  var validate_errors = new Array();

  if (comment_message.value.length == 0) { 
    validate_errors.push("Please enter your comment.");
  } 

 if (comment_email.value.length > 0 && validate_email(comment_email.value) == false) {  
   validate_errors.push("Please enter a valid email address."); 
 }
  
  if (validate_errors.length>0) {
    var error_text = "";
    for (i=0;i<validate_errors.length;i++) {
      error_text = error_text + validate_errors[i] + "<br>";
    }
    document.getElementById("email_error_msg").innerHTML = error_text;
    return;
  }

  document.forms['iframe_form'].submit();
}

function validate_email(text) {
        var email_exp = /^[\w\-\.\+]+\@[a-zA-Z0-9\.\-]+\.[a-zA-z0-9]{2,4}$/;
        if (text.match(email_exp)) { return true; }
        else { return false; }
}