// JavaScript Document
function emailtofriend(){

var ajaxRequest;  // The variable that makes Ajax possible!
	var senderName = document.getElementById("yourname").value;
	var senderEmail = document.getElementById("youremail").value;
	var friendEmail = document.getElementById("friendemail").value;
	var rpage = document.getElementById("rpage").value;
		
	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
	ajaxRequest.onreadystatechange = function(){
		if(ajaxRequest.readyState != 4){
			document.getElementById("emailmessage").innerHTML = "<div style='font-size:12px; color:#dd2e2e;' align='center'><strong>Sending email...</strong></div>";
		}
		if(ajaxRequest.readyState == 4){
				setTimeout('onWndTimeout()', 100000);
				function onWndTimeout() {
				}
				
				//ajaxRequest.responseText;
			//document.getElementById("emailmessage").innerHTML = "<div style='font-size:12px; color:#dd2e2e;' align='center'><strong>Email sent!</strong></div>";
			document.getElementById("emailmessage").innerHTML = ajaxRequest.responseText;
			document.getElementById("friendemail").value='';
		}
	}

	if(senderName == ""){
	alert("Please enter your name");
	document.getElementById("yourname").focus();
	return;
	}
	
	if(senderEmail == ""){
	alert("Please enter your email");
	document.getElementById("youremail").focus();
	return;
	}
	
	if(friendEmail == ""){
	alert("Please enter friend's email");
	document.getElementById("friendemail").focus();
	return;
	}
	
	if (echeck(senderEmail)==false){
		return;
	}
	
	if (echeck(friendEmail)==false){
		return;
	}

	ajaxRequest.open("GET", "email2friend.php?sendername=" + senderName + "&senderemail=" + senderEmail + "&friendemail=" + friendEmail + "&rpage=" + rpage, true);
	ajaxRequest.send(null); 

	
}

function echeck(str) {

		var at="@"
		var dot="."
		var lat=str.indexOf(at)
		var lstr=str.length
		var ldot=str.indexOf(dot)
		if (str.indexOf(at)==-1){
		   alert("Invalid E-mail ID")
		   return false
		}

		if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr){
		   alert("Invalid E-mail ID")
		   return false
		}

		if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr){
		    alert("Invalid E-mail ID")
		    return false
		}

		 if (str.indexOf(at,(lat+1))!=-1){
		    alert("Invalid E-mail ID")
		    return false
		 }

		 if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot){
		    alert("Invalid E-mail ID")
		    return false
		 }

		 if (str.indexOf(dot,(lat+2))==-1){
		    alert("Invalid E-mail ID")
		    return false
		 }
		
		 if (str.indexOf(" ")!=-1){
		    alert("Invalid E-mail ID")
		    return false
		 }

 		 return true					
	}