var xmlHttp

function validation()
{ 

xmlHttp=GetXmlHttpObject();
if (xmlHttp==null)
  {
  alert ("Your browser does not support AJAX!");
  return;
  } 
  var txtemail = document.getElementById("frndemail").value; 
  var txtsubject = document.getElementById("subject").value; 
  var txtcomments = document.getElementById("comments").value; 
	var url="../include/mailfriend.asp";
	url=url+"?email="+txtemail+"&subject="+txtsubject+"&comment="+txtcomments;
	
	xmlHttp.onreadystatechange=stateChanged;
	xmlHttp.open("GET",url,true);
	xmlHttp.send(null);
}

function stateChanged(){ 
	if (xmlHttp.readyState==4){
		//document.getElementById('lightjob').style.display='block';
		document.getElementById("thnid").innerHTML=xmlHttp.responseText;
		document.getElementById("frndemail").value=""; 
        document.getElementById("subject").value=""; 
        document.getElementById("comments").value=""; 
		//alert(document.getElementById("thnid").innerHTML);
	}
}

function GetXmlHttpObject()
{
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;
}

   function CheckForm(form){
		var subStr = "";

		if (form.frndemail.value == ""){
			subStr = subStr + "Enter Email Address\n";
		}

		if (form.subject.value == ""){
			subStr = subStr + "Enter Subject\n";
		}


		if (form.comments.value == ""){
			subStr = subStr + "Enter Comments.\n";
		}

		if (subStr != ""){
			messStr="Following fields are required:\n";
			endStr="Please enter the requested information.";
			alert(messStr + subStr + endStr);
			return false;
		}
		return true;
		}