Chat AJAX

[stephenalistoun]

Hi all,

I can not see the messages when other people enter in text but when I enter the text i eventually see the messages. What could I be doing wrong in my Javascript Code:

<script type="text/javascript">
	
	function ajaxRequest()
	{
		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 init() 
	{
		loadURL("checkUpdate.php");
		
		clearInterval(mTimer);
		
		mTimer = setTimeout("init()",1000);
	}
	

	function loadURL(url) 
	{
		mygetrequest=new this.ajaxRequest()
		mygetrequest.onreadystatechange=function()
		{
			if (mygetrequest.readyState==4 || mygetrequest.readyState=="complete")
			{
				processData(mygetrequest.responseText);  //download successful
			}
		}
		
		mygetrequest.open("GET", url, true);
		mygetrequest.send(null);		
	}
	
	function processData(responseText) 
	{
		var countValue = responseText;
		
		if(countValue > 0)
		{
			showChatData("getcd.php");
		}
	}
	
	

	
	function showChatData(url)
	{
		var bustcacheparameter=(url.indexOf("?")!=-1)? "&"+new Date().getTime() : "?"+new Date().getTime();
		
		mygetrequest=new this.ajaxRequest()
		mygetrequest.onreadystatechange=function()
		{
			if (mygetrequest.readyState==4 || mygetrequest.readyState=="complete")
			{
				showData(mygetrequest.responseText);  //download successful
			}
		}
		
		mygetrequest.open("GET", url, true);
		mygetrequest.send(null);
	}
	
	
	
	function showData(responseText) 
	{
		document.getElementById("txtHint").innerHTML = responseText;   /*mygetrequest.responseText;*/
		
		var objDiv = document.getElementById("leftHand");
			
		objDiv.scrollTop = objDiv.scrollHeight;
		
	}

	function checkEnter(e)
	{
		var keynum;
		var keychar;
		var numcheck;
		
		if(window.event) // IE
		{
		  keynum = e.keyCode;
		}
		else if(e.which) // Netscape/Firefox/Opera
		{
		  keynum = e.which;
		}
		
		if(keynum == 13)
		{
			insertData();
		}

	}
	
	
	function insertData()
	{
		str = document.getElementById("chatText").value;
		
		if(str == "")
		{
			alert("Please enter in Text");
		}
		
		else
		{
			font = document.getElementById("fontStyle").value;
		
			var url = "insertRow.php?value=" + str +"&font=" + font;
			
			var bustcacheparameter=(url.indexOf("?")!=-1)? "&"+new Date().getTime() : "?"+new Date().getTime();
		
			mygetrequest=new this.ajaxRequest()
			
			mygetrequest.onreadystatechange=function()
			{
				if (mygetrequest.readyState==4)
				{
					if (mygetrequest.status == 200)
					{
						init();
					}
					else
					{
						alert("status is " + mygetrequest.status);
					}
				}
			}
			mygetrequest.open("GET", url + bustcacheparameter, true);
			mygetrequest.send(null);
			
			document.getElementById("chatText").value = "";	
			
			clearInterval(mTimer);
			
			init();
		}
	}
</script>

Thanks Stephen