function validation_form(adid)
{
  var filter=/^[a-zA-Z0-9][\w\_\.-]*[a-zA-Z0-9]@[a-zA-Z0-9][\w\.-]*[a-zA-Z0-9]\.[a-zA-Z][a-zA-Z\.]*[a-zA-Z]$/;
  var Yemail = document.getElementById("Yemail");
  var Message = document.getElementById("message");
  var Vcode = document.getElementById("verification_code");
  var adid = document.getElementById("AdId").value;
  var adType = document.getElementById("AdType").value;
  if(Yemail.value =='')
  {
    alert("Please enter your email address !");
	Yemail.focus();
	return false;
  }
  if(!filter.test(Yemail.value))
  {
    alert("Please enter valid email address !");
	Yemail.select();
	return false;
  }
  if(Message.value =='')
  {
    alert("Please enter your message !");
	Message.focus();
	return false;
  }
  if(Vcode.value=='')
  {
    alert("Please enter verification code");
	Vcode.focus();
	return false;
  }
  else
  {
    var url = 'Yemail='+Yemail.value+'&message='+Message.value+'&Vcode='+escape(Vcode.value)+'&AdId='+adid+'&AdType='+adType;
	//alert(url);
	getHttpConnection_contactposter('contact_poster.php?',url,'contact_poster');
  }
}
function GetXmlHttpObject_contactposter()
{
	var xmlHttp=null;
	try
	 {
	 // Firefox, Opera 8.0+, Safari
	 xmlHttp=new XMLHttpRequest();
	 }
	catch (e)
	 {
	 // Internet Explorer
	 try
	  {
	  xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
	  }
	 catch (e)
	  {
	  xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
	  }
	 }
	return xmlHttp;
}

var getRequest_contactposter=GetXmlHttpObject_contactposter();

function getHttpConnection_contactposter(pagename,str,locationId)
{
	var myurl = pagename+str;
	getRequest_contactposter.open("GET", myurl, true);	
	event_id = locationId;
	getRequest_contactposter.onreadystatechange = useHttpResponse_contactposter;		
	getRequest_contactposter.send(null);	
}


function useHttpResponse_contactposter()
{
   if (getRequest_contactposter.readyState == 4)
   {
    	if(getRequest_contactposter.status == 200)
		{
      		var mytext = getRequest_contactposter.responseText;
			//alert(mytext)
			document.getElementById(event_id).innerHTML = mytext;
		}
    }
  else
  {
	document. getElementById(event_id).innerHTML = "<img src='images/loading.gif'>";
  }
}