// JavaScript Document
function sendMessage()
{
	var sender = document.getElementById("sender").value;
	var message = document.getElementById("message").value;
	var receiver = document.getElementById("receiver").value;
	
	if (sender == "" || message == "" || receiver=="") 
	{ 
		alert("Enter All The Fields");
		return 
	} 

	var request = null;
	if (window.XMLHttpRequest) 
	{
		request = new XMLHttpRequest();
	} 
	else if (window.ActiveXObject)
	{
		request = new ActiveXObject("Microsoft.XMLHTTP");
	}
 
	if (request)
 	{ 
		request.open("GET","includes/sendMessage.php?sender="+sender+"&receiver="+receiver+"&message="+message,true);
		//request.open("GET","file1.txt",true);
		request.onreadystatechange=function()
		{ 
			if (request.readyState==1) 
			{ 
				document.getElementById("messageBox").innerHTML="<img src='images/loader.gif' height='20' width='20' > "; 
			} 
			else if  (request.readyState==4)
			{
				response=request.responseText; 
				document.getElementById("messageBox").innerHTML=response ;
				document.getElementById("sender").value = "";
				document.getElementById("message").value = "";
				document.getElementById("receiver").value = "";
		 }
		} 
		request.send(null);
	} 
	else 
	{ 
		document.getElementBYid("messageBox").innerHTML=("sorry Unable to create instance"); 
	} 
}

function showMessage() 
{ 
	document.getElementById("messageForm").style.display="block";
	document.getElementById("postMessageLink").style.display="none" ; 
}  

function checkLength(obj,messMaxLength)
{
	if ( obj.message.value.length>messMaxLength )
	{
		obj.message.value = obj.message.value.substr(0, messMaxLength);
		window.alert("Your message has reached the maximum allowed length of "+messMaxLength+" characters !!");
		return false;
	}

	document.getElementById('counterDiv').innerHTML = messMaxLength-obj.message.value.length  +" chars left";
	return true;
}