/**
* {url} is the base URL with which this
* AMAX object will communicate
*
* {isXML} is true|false depending on
* if this object will return its response
* in proper xml format (t)
* or simple text (f)
*
*
* 2007 Supernova Media Group Inc. All rights reserved. 
* Amir Sobhi. (amir [ at ] supernova [ dot ] com)
*/




function AMAX(url, isXML)
{




	this.url = url;
	this.hp = getRO();
	hp = this.hp;
	var ev = new Object();
	var me = this;
	
	ev.onLoad = function(){};
	
	
	/**
	 * returns a new HTTP Request Object
	 * depending on browser
	 */
	function getRO()
	{
		if (window.XMLHttpRequest)
		{
			return new XMLHttpRequest();
		} 
		else if (window.ActiveXObject)
		{
			var r = new ActiveXObject("Msxml2.XMLHTTP");
			if (!r)
				return new ActiveXObject("Microsoft.XMLHTTP");
			return r;
		}
	}
	
	
	
	/**
	 * sends the query string {q} using
	 * method {m}.  {o} is the event whose onLoad
	 * is called upon successfull loading
	 */
	this.send = function(q,m)
	{
	    ev.onLoad = this.onLoad;
		ev.success = false;
		q = q.replace(/\s+/i,"_");
		hp.open(m, url + (m.toLowerCase()=="get" ?  q.charAt(0) == '?' ? q : '?' + q  : ""));
		hp.onreadystatechange = handle;
		hp.send(m.toLowerCase()=="post" ? q : null);
	}
	

	
	/**
	 * private method for handling the
	 * request
	 */
	function handle(e)
	{
		try
		{
			if(hp.readyState == 4)
			{
				if(hp.status == 200)
				{
					if (isXML)
						setRspn(hp.responseXML);
					else
						setRspn(hp.responseText);
				}
			}
		}
		catch (e)
		{
			// do nothing
			// or
			// alert('An Error Occurred while parsing "'+ url + '"'); 
		}
	}
	
	
	
	/**
	 * private method for setting the response and
	 * calling the events .onLoad property
	 */
	function setRspn(e)
	{
		ev.success = true;
		ev.data = e;
		ev.onLoad();
		document.toolkit.events.onAMAXLoad();
	}
	
	
	
	
	
	
	
	/**
    *
    *  URL encode / decode functionality added to Amax
    *  Extracted from :  http://www.webtoolkit.info/
    *
    **/
    
    
    // public method for url encoding
    this.encode = function (string) 
    {
        return escape(_utf8_encode(string));
    }

    // public method for url decoding
    this.decode = function (string) 
    {
        return _utf8_decode(unescape(string));
    }

    // private method for UTF-8 encoding
    function _utf8_encode (string) 
    {
        string = string.replace(/\r\n/g,"\n");
        var utftext = "";

        for (var n = 0; n < string.length; n++) 
        {

            var c = string.charCodeAt(n);

            if (c < 128) 
                utftext += String.fromCharCode(c);
            else if((c > 127) && (c < 2048)) 
            {
                utftext += String.fromCharCode((c >> 6) | 192);
                utftext += String.fromCharCode((c & 63) | 128);
            }
            else 
            {
                utftext += String.fromCharCode((c >> 12) | 224);
                utftext += String.fromCharCode(((c >> 6) & 63) | 128);
                utftext += String.fromCharCode((c & 63) | 128);
            }

        }

        return utftext;
    }
    
    

    // private method for UTF-8 decoding
    function _utf8_decode (utftext) 
    {
    
        var string = "";
        var i = 0;
        var c = c1 = c2 = 0;

        while ( i < utftext.length ) 
        {

            c = utftext.charCodeAt(i);

            if (c < 128) 
            {
                string += String.fromCharCode(c);
                i++;
            }
            else if((c > 191) && (c < 224)) 
            {
                c2 = utftext.charCodeAt(i+1);
                string += String.fromCharCode(((c & 31) << 6) | (c2 & 63));
                i += 2;
            }
            else 
            {
                c2 = utftext.charCodeAt(i+1);
                c3 = utftext.charCodeAt(i+2);
                string += String.fromCharCode(((c & 15) << 12) | ((c2 & 63) << 6) | (c3 & 63));
                i += 3;
            }

        }

        return string;
    }
    
	
	
	
	
	
	
	
	
	
	

}