function create_http_object()
    {
        var ActiveXTypes = [
            "Microsoft.XMLHTTP",
            "MSXML2.XMLHTTP.5.0",
            "MSXML2.XMLHTTP.4.0",
            "MSXML2.XMLHTTP.3.0",
            "MSXML2.XMLHTTP"
        ];

        for( var i = 0; i < ActiveXTypes.length; i++ )
        {
            try
            {
                return new ActiveXObject( ActiveXTypes[i] );
            }
            catch( e )
            { }
        }

        try
        {
            return new XMLHttpRequest();
        }
        catch( e )
        { }

        return false;
    }

    function make_request(url, callback_function, http_method, post_values, return_xml)
    {
        http = create_http_object();

        if(!http)
        {
            alert('Je browser ondersteunt deze feature niet.');
            return false;
        }

        http.onreadystatechange = function()
        {
            if(http.readyState == 4)
            {
                if(http.status == 200)
                {
                    if(callback_function)
                    {
                        if(return_xml)
                        {
                            eval(callback_function + '(http.responseXML)');
                        }
                        else
                        {
                            eval(callback_function + '(http.responseText)');
                        }
                    }
                }
                else
                {
                    alert('Error! (' + http.status + ')');
                }
            }
        }

        if(!post_values)
        {
            post_values = null;
        }
        if(!http_method)
        {
            http_method = "GET";
        }

        http.open(http_method, url, true);

        if(http_method == "POST")
        {
            http.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
        }

        http.send(post_values);
    }

    function save_text()
    {
            var the_form = document.getElementById('edit_form');
			var post_string = '';

			
			
            post_string += "message=" + escape(the_form.message.value);
            post_string += "&user_id=" + escape(the_form.user_id.value);

            make_request('./plugin/chat/post_msg.php', 'handle_response', 'POST', post_string);
            
            the_form.message.value = '';
            the_form.message.focus();
    }

    function handle_response(text)
    {
        var result = text.split('::', 2);

        switch(result[0])
        {
            case '100':
                document.getElementById('edit_area').innerHTML = result[1];
                new_text = result[1];
                document.getElementById('edit_area').onclick = inline_edit;
            break;
            case '200':
                alert('Could not edit text!');
                cancel_edit();
            break;
        }
    }
    
    
    function enter(evt)
	{
		var charCode = (evt.which) ? evt.which : window.event.keyCode; 
	 
	    if (charCode == 13) 
	    { 
			save_text();
			return false;
		} 
	
	}