//author: Angel Kostadinov 2007

_trackacct 	= null;
_engine 	= 'http://www.bgtree.net/engine';
_d 		= document;
_n		= navigator; 
_t		= new Date();

//Initialize track engine
function BGTrack()
{
	_bgtreeSave();	
}
function _bgtreeSave()
{
	var _ic = new Image(); //simulating image container
	_ic.src = _engine + '/Hunter?_trackacct='+_trackacct+'&_r='+_bgtreeURLEncode(_d.referrer)+'&_n='+_n;
	_ic.onload=function()
	{
		_bgtreeVoid();
	}
}
function _bgtreeVoid()
{
	return;
}

function _bgtreeURLEncode( _aurl )
{
	var SAFECHARS = "0123456789" +					// Numeric
					"ABCDEFGHIJKLMNOPQRSTUVWXYZ" +	// Alphabetic
					"abcdefghijklmnopqrstuvwxyz" +
					"-_.!~*'()";					// RFC2396 Mark characters
	var HEX = "0123456789ABCDEF";

	var plaintext = _aurl;
	var encoded = "";
	for (var i = 0; i < plaintext.length; i++ ) {
		var ch = plaintext.charAt(i);
	    if (ch == " ") {
		    encoded += "+";				// x-www-urlencoded, rather than %20
		} else if (SAFECHARS.indexOf(ch) != -1) {
		    encoded += ch;
		} else {
		    var charCode = ch.charCodeAt(0);
			if (charCode > 255) {
				// Unicode characters range
				encoded += "+";
			} else {
				encoded += "%";
				encoded += HEX.charAt((charCode >> 4) & 0xF);
				encoded += HEX.charAt(charCode & 0xF);
			}
		}
	} // for
	return encoded;
};