// SmartLink v0.2
// Grant Harding at fxcm, 2006

var baseUrl = "http://fxwords.dev.fxcm.com/"; // base url
var removeWords = true;          // link word once?
var wordUrl = baseUrl+"Smartlink.do?url="; // url for array
var wordsShowDef = true;        // show definition
var wordsDefTooltip = true;     // show as tooltip (otherwise will create custom div tag) [wordsShowDef must be true]


var _slE = document.getElementById('article');

/* load js from fxwords w/ js array */
var _ref = document.location.href.replace(/\&/g,'%26').replace(/\'/g, '%27').replace(/\"/g, '%22'); // '
var script = wordUrl+_ref;
document.write('<s'+'cript type="text/javascript" src="'+script+'"></script>');
document.write('<style type="text/css">#slBox { background-image: url('+baseUrl+'test/def.gif); }</style>');

var _boxactive = 0;

//window.onload = function() { loadSmartLinks(); }

function loadSmartLinks() {

/* load words */
  
}

function _loadWords(req) {
  var _ws = req.getElementsByTagName('def');
  for (i = 0; i < _ws.length; i++) {
    var _w = req.getElementsByTagName('def')[i];
    _f['word'] = _w.getElementsByTagName('word')[0];
    _f['def'] = _w.getElementsByTagName('defi')[0];
    _f['link'] = _w.getElementsByTagName('link')[0];
    defs.push(_f);
  }
  
/* traverse through dom and check for nodeType == 3 (text) */
  _travEle(document.getElementById('article'));

}

function startTrav() {
    _travEle(document.getElementById('article'));
}

function _travEle(e) {

  var c = e.childNodes;
  for (var i = 0; i < c.length; i++) {
    if (defs.length == 0) { break; }
    if (c[i].nodeType == 3) { if (_parseEle(c[i])) { i++; } }
    else if (!(c[i].nodeName == 'A' && c[i].href.length > 0)) {
      _travEle(c[i]);
    }
  }

}

function _parseEle(e) {


  
  var orig = e.nodeValue;
  var i = orig;
  if (orig.replace(/\s+/).length == 0) return;


  var l = i.toLowerCase();
  
  var firstTermPos = -1;
  var firstTerm = null;
  
  for (j = 0; j < defs.length; j++) {
    var term = defs[j]['word'];
    var url = defs[j]['link'];
    var def = defs[j]['def'];
    
    var t = l.indexOf(term);
    if (t > -1 && (t < firstTermPos || firstTermPos < 0)) {
      firstTermPos = t;
      firstTerm = j;
    }
  }
  
  if (firstTermPos > -1) {
    if (firstTermPos > 0 && i.substring(firstTermPos - 1, firstTermPos).match(/[a-zA-Z]/)) {
        return false;
    }
    var first = document.createTextNode(i.substring(0,firstTermPos));
    var second = document.createElement('a');
    second.appendChild(document.createTextNode(i.substring(firstTermPos, firstTermPos+defs[firstTerm]['word'].length)));
    second.setAttribute("href", defs[firstTerm]['link']);
    if (wordsShowDef == true) {
        if (wordsDefTooltip == true) {
            second.setAttribute("title", defs[firstTerm]['def']);
        } else {
            second.setAttribute("onMouseOver", "showBox(this, event,'"+defs[firstTerm]['def']+"')");
            second.setAttribute("onMouseOut", "setTimeout('hideBox()',2000)");
        }
    }
    second.setAttribute("target", "_blank");
    var third = document.createTextNode(i.substring(firstTermPos+defs[firstTerm]['word'].length, i.length));
    
    var p = e.parentNode;
    
    p.replaceChild(third,e)
    p.insertBefore(second, third);
    p.insertBefore(first, second);
    if (removeWords == true) {
      defs.splice(firstTerm,1);
    }
    return true;
  }
    return false;
}

function _urlencode(plaintext) {
	var SAFECHARS = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz-_.!~*'()";
	var HEX = "0123456789ABCDEF";

	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) {
				encoded += "+";
			} else {
				encoded += "%";
				encoded += HEX.charAt((charCode >> 4) & 0xF);
				encoded += HEX.charAt(charCode & 0xF);
			}
		}
	} // for

	return encoded;
}
function hideBox() {
    _boxactive--;
    if (_boxactive < 1) {
        document.getElementById('slBox').style.display = 'none';
        _boxactive = 0;
    }
}
function showBox(e,event,def) {

_boxactive++;

var curleft = curtop = 0;
	if (e.offsetParent) {
		curleft = e.offsetLeft
		curtop = e.offsetTop
                obj = e;
		while (obj = obj.offsetParent) {
			curleft += obj.offsetLeft
			curtop += obj.offsetTop
		}
	}

var _b = document.getElementById('slBox');

if (_b == null) {
    _d = document.createElement('div');
    _d.setAttribute('id','slBox');
    _dh = document.createElement('h5');
    _dh.appendChild(document.createTextNode('FXWords'));
    _dp = document.createElement('p');
    _dp.appendChild(document.createTextNode(''));
    _d.appendChild(_dh);
    _d.appendChild(_dp);
    _d.background = 'http://fxwords.dev.fxcm.com/test/def.gif';
    _d.style.width = '194px';
    _d.style.height = '93px';
    _d.style.display = 'none';
    _d.style.position = 'absolute';
    _d.setAttribute("onMouseOver", "_boxactive++");
    _d.setAttribute("onMouseOut", "setTimeout('hideBox()',2000)");
    document.getElementsByTagName('body')[0].appendChild(_d);
}

var _b = document.getElementById('slBox');
_b.getElementsByTagName('p')[0].innerHTML = def;

_b.style.left = curleft + 'px';
_b.style.top = (curtop + 20) + 'px';
_b.style.display = 'block';

}