function sendInvite(){
	if (!checkValidation(document.getElementById('email_addr'),false))
		return;
 var ajaxRequest;  // The variable that makes Ajax possible!

 try{
   // Opera 8.0+, Firefox, Safari
   ajaxRequest = new XMLHttpRequest();
 }catch (e){
   // Internet Explorer Browsers
   try{
      ajaxRequest = new ActiveXObject("Msxml2.XMLHTTP");
   }catch (e) {
      try{
	 ajaxRequest = new ActiveXObject("Microsoft.XMLHTTP");
      }catch (e){
	 // Something went wrong
	 alert("Your browser broke!");
	 return false;
      }
   }
 }

 // Create a function that will receive data
 // sent from the server and will update
 // div section in the same page.
 ajaxRequest.onreadystatechange = function(){

   if(ajaxRequest.readyState == 4){
	//	alert("inside response:"+ajaxRequest.responseText);
    //  var searchResults = document.getElementById('resultsDiv');
    //  searchResults.innerHTML = ajaxRequest.responseText;
	alert("Your invitation has been sent");


   }
 }


 // Now get the value from user and pass it to
 // server script.
 var search_string;
 var invite_string;
 var user_id;


 if (document.getElementById('email_addr'))
	search_string = document.getElementById('email_addr').value;

 if (document.getElementById('user_id'))
	user_id = document.getElementById('user_id').value;

 var queryString =  "?user_id=" + user_id+ "&s=" + search_string +"&ts=" + new Date().getTime();
//  alert("inside before get");

 ajaxRequest.open("GET", "s_invite.php" + queryString, true);
 ajaxRequest.send(null);
}