function mail(event,webid)
{       //alert(event);
     if(((e=event.keyCode)==13) || (event==13))
     {
         addr = document.getElementById("Email").value;
         var man = 1;
         var db = 1;
         if (addr == '' && man) {
            if (db) alert('email address is mandatory');
            return false;
         }
         if (addr == '') return true;
         var invalidChars = '\/\'\\ ";:?!()[]\{\}^|';
         for (i=0; i<invalidChars.length; i++) {
            if (addr.indexOf(invalidChars.charAt(i),0) > -1) {
               if (db) alert('email address contains invalid characters');
                       document.getElementById("Email").value="";
               return false;
            }
         }
         for (i=0; i<addr.length; i++) {
            if (addr.charCodeAt(i)>127) {
               if (db) alert("email address contains non ascii characters.");
                       document.getElementById("Email").value="";
               return false;
            }
         }

         var atPos = addr.indexOf('@',0);
         if (atPos == -1) {
            if (db) alert('email address must contain an @');
                    document.getElementById("Email").value="";
            return false;
         }
         if (atPos == 0) {
            if (db) alert('email address must not start with @');
                    document.getElementById("Email").value="";
            return false;
         }
         if (addr.indexOf('@', atPos + 1) > - 1) {
            if (db) alert('email address must contain only one @');
                    document.getElementById("Email").value="";
            return false;
         }
         if (addr.indexOf('.', atPos) == -1) {
            if (db) alert('email address must contain a period in the domain name');
                    document.getElementById("Email").value="";
            return false;
         }
         if (addr.indexOf('@.',0) != -1) {
            if (db) alert('period must not immediately follow @ in email address');
                    document.getElementById("Email").value="";
            return false;
         }
         if (addr.indexOf('.@',0) != -1){
            if (db) alert('period must not immediately precede @ in email address');
                    document.getElementById("Email").value="";
            return false;
         }
         if (addr.indexOf('..',0) != -1) {
            if (db) alert('two periods must not be adjacent in email address');      
                    document.getElementById("Email").value="";
            return false;
         }
         var suffix = addr.substring(addr.lastIndexOf('.')+1);
         if (suffix.length != 2 && suffix != 'com' && suffix != 'net' && suffix != 'org' && suffix != 'edu' && suffix != 'int' && suffix != 'mil' && suffix != 'gov' & suffix != 'arpa' && suffix != 'biz' && suffix != 'aero' && suffix != 'name' && suffix != 'coop' && suffix != 'info' && suffix != 'pro' && suffix != 'museum') {
            if (db) alert('invalid primary domain in email address');
                    document.getElementById("Email").value="";
            return false;
         }
         //-----email check end--->
         emailregister(addr,webid);
    }
}

function emailregister(addr,webid)
{
  xmlhttp=GetXmlHttpObject();
  if (xmlhttp==null)
  {
      alert ("Browser does not support HTTP Request");
      return;
  }
  var url="http://"+window.location.host+"/emailregister.php";
  url=url+"?email_add="+addr+"&webid="+webid;
  //alert(url);
  xmlhttp.onreadystatechange=stateChanged1;
  xmlhttp.open("GET",url,true);
  xmlhttp.send(null);
}


 function stateChanged1()
 { if (xmlhttp.readyState==4)
      {
           document.getElementById("mailmessage").innerHTML=xmlhttp.responseText;
      }
 }


 function GetXmlHttpObject()
  { if (window.XMLHttpRequest)
        {return new XMLHttpRequest();}
    if (window.ActiveXObject)
        {return new ActiveXObject("Microsoft.XMLHTTP");}
    return null;
  }

//====================================================================================================================
function showcomment()
{
  a=document.getElementById("showcomment").innerHTML;
  if((!(a=='&nbsp;&nbsp;&nbsp;&nbsp;<a onclick="showcomment()">Show Comment</a>')) && (!(a=='&nbsp;&nbsp;&nbsp;&nbsp;<A onclick=showcomment()>Show Comment</A>')))
  {
      showcomment_respons_blank();
  }
  else
  {
    query = document.getElementById("queryString").value;
    xmlhttp=GetXmlHttpObject();
    if (xmlhttp==null)
    {
        alert ("Browser does not support HTTP Request");
        return;
    }
    var url="http://"+window.location.host+"/showcomment.php";
    url=url+"?"+query;
    //alert(url);
    xmlhttp.onreadystatechange=showcomment_respons;
    xmlhttp.open("GET",url,true);
    xmlhttp.send(null);
   }
}
 function showcomment_respons()
 { if (xmlhttp.readyState==4)
      {
          document.getElementById("showcomment").innerHTML=xmlhttp.responseText;
      }
 }
 function showcomment_respons_blank()
 {
          document.getElementById("showcomment").innerHTML="&nbsp;&nbsp;&nbsp;&nbsp;<a onclick='showcomment()'>Show Comment</a>";
 }