JS get mouse and reposition mouse position

//Get position
 pt.getpos = function (obj, isnonstatic) {
  var left = 0, top = 0;
 &nb Sp;while (obj) {
   left + = Obj.offsetleft;
   top + = obj.offsettop;
 &N Bsp; obj = obj.offsetparent;
   if (isnonstatic && this.isnonstaticpos (obj)) {
    break;
  &NBSP}
  }
  return {left:left, top:top};
 }

 //mouse positioning
 pt.fallowmouse = function (e, obj, dir) {
  e = e | | window.event;
 &N Bsp;if (obj) | | |!e) {//non-static positioned left top positioning is not valid, or is not an event object
   return false;
&N BSP;&NBSP}
  dir = Dir | | {left:false, top:false};
  var ex = E.clientx;
  var ey = e.clienty;
  var bl = document.body.scrollLeft | | document.documentElement.scrollLeft;
  var bt = Document.body.scrollTop | | document.documentElement.scrollTop;
  var bw = Document.body.offsetWidth | | document.documentElement.offsetWidth;
  //var bh = document.body.offsetHeight | | document.documentElement.offsetHeight;
  var bh = document.documentElement.clientHeight;
  var ow = obj.offsetwidth;
  var oh = obj.offsetheight;

var ol = Dir.left? (Ex-ow < BL ex + Bl:ex + bl-ow): (ex + ow > BW ex + bl-ow:ex + BL);
OL = Math.max (0, BL, OL);
var ot = dir.top? (Ey-oh < BT EY + Bt:ey + Bt-oh): (ey + OH > BH ey + bt-oh:ey + BT);
ot = Math.max (0, BT, OT);

var pnode = This.nearestnonstaticposparenode (obj);
if (Pnode) {
var pos = This.getpos (Pnode);
OL-= Pos.left;
OT-= pos.top;
}
Obj.style.left = ol + ' px ';
Obj.style.top = ot + ' px ';
}

 //Screen central positioning
 pt.setcenter = function (obj) {
  var OCW = obj.offsetwidth;
  v Ar och = obj.offsetheight;
  var BSL = Document.body.scrollLeft | | document.documentElement.scrollLeft;
  var BST = Document.body.scrollTop | | document.documentElement.scrollTop;
  var BCW = document.documentElement.offsetWidth;
  var BCH = document.documentElement.offsetHeight;
  var OSL = BSL + Math.floor ((BCW-OCW)/2);
   osl = Math.max (BSL, OSL);
  var ost = BST + Math.floor ((Bch-och)/2);
   ost = Math.max (BST, OST);
  obj.style.left = OSL + ' px ';
  obj.style.top = ost + ' px ';
 }

 pt.showautoadapttext = function (node, text, pixelwidth, suffix) {
  if (node.nodename) {
   pixelwidth = Pixelwidth | | 14/95;
   var len1 = Text.getlen ();
   if (typeof Text = = ' string ') {
    var len2 = Math.floor (Node.clientwidt h * pixelwidth);
    var tstr = ';
    suffix = suffix | | '...';
    var vstr = len1 > Len2 text.substringpro (len2-suffix.length): text;
    if (Text!= vstr) {
     tstr = text;
   & Nbsp; vstr + = suffix;
    }
    node.title = tstr;
    node.value = vstr;
   }
  }
 }

 pt.getsubcodes = function (data, _code) {
  if (Data.subcodescache = = undefined) {
&NBSP;&N Bsp; data.subcodescache = [];
   for (var code in data) {
    if (/^[d]{2} ([d][1-9]) | ( [1-9] [d])) $/.test (code) {
     var parecode = code.substr (0, 2) + ';
&NBSP;&NBSP;&NBSP;&N Bsp; if (Data.subcodescache[parecode] = = undefined) {
       Data.subcodescache[parecode] = [];
     }
     data.subcodescache[parecode].push (code);
    }
   }
  }
  return Data.subcodescache[_code] | | [];
 }