if (document.images)
   {
     pic1= new Image();
     pic1.src="images/working.gif";  

     pic2= new Image();
     pic2.src="images/dot.gif";

     pic3= new Image();
     pic3.src="images/linedot.gif";

     pic4= new Image();
     pic4.src="images/transpBrown50.png";
     
     pic5= new Image();
     pic5.src="images/arrow.gif";

   }


var emailRegex = /^[\w-\.]+@([\w-]+\.)+[\w-]{2,4}$/;
function checkmail(){
    var mail = document.form1.Nletter.value;
        if(!mail.match(emailRegex)) {
            alert ("please inter a valid email");
            document.form1.Nletter.focus();
            return false;
        }else {ShowLightBox(mail);return false;}
   // return true;
  }
        
        var curr_lb_div; 
	//var is_modal = false; 
	 
	 
	function HideLightBox()
	{ 
	         document.getElementById('single1').style.display='none';
	         document.getElementById('fade').style.display='none';  
	}

        var xmlHttp
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 ShowLightBox(email)
	{
           // alert (document.form1.Nletter.value);
	xmlHttp = GetXmlHttpObject()
        if(xmlHttp == null){
		alert ("Your browser does not support AJAX!");
		return;
	  }

         var loader = document.getElementById('single1');
	    loader.style.display='block';
	    document.getElementById('fade').style.display='block'; 
          xmlHttp.onreadystatechange = function(){

	//var uldiv = document.getElementById('ul_'+id);

		if (xmlHttp.readyState == 4){
                    var res = xmlHttp.responseText;
                 //   alert(res);
			if (res == "thanks"){
                    loader.innerHTML = '<div id="apDiv11" onclick="HideLightBox()">Thank you\n\
                <p>You have successfully subscribed </p>\n\
           <p>Click here  to close<br />  </p></div>';
                  document.form1.onsubmit= 'return false;';
		document.getElementById("sendnewslet").onclick= 'return false';
		  document.form1.Nletter.disabled = true;
                  document.form1.Nletter.value = "thanks";
			// document.form1.Nletter.blur();
		  
		 // document.getElementById("sendnewslet").src ="images/arrow.gif";

                        }else {loader.innerHTML = '<div id="apDiv11" onclick="HideLightBox()"><p>error..</p>\n\
                email already exists or server down <p>Please try again later </p></div>';
           
		  document.form1.onsubmit= 'return false;';
		   	}      
           } else {
			loader.innerHTML = '<div><img src="images/working.gif" alt="loading" /> </div>';    
		}
          }
    var url = "newslet.php";
	var params = "email="+email;
	xmlHttp.open("POST",url,true);
	xmlHttp.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
	xmlHttp.setRequestHeader("Content-length", params.length);
	xmlHttp.setRequestHeader("Connection", "close");
	xmlHttp.send(params);
}