var windowWidth=0; var windowHeight=0;

var IE = document.all?true:false;
if (!IE) document.captureEvents(Event.MOUSEMOVE)
document.onmousemove = getMouseXY;

/*****************************************************************************
* findPosX(), findPosY()
* each returns a given element object's left and top positions. they were
* shamelessly borrowed from the good folks at
* http://www.quirksmode.org/js/findpos.html.
*****************************************************************************/
function findPosX(obj) {
  var curleft = 0;
  if (obj.offsetParent) {
    while (obj.offsetParent) {
      curleft += obj.offsetLeft
      obj = obj.offsetParent;
    }
  } else if (obj.x) {
    curleft += obj.x;
  }
  return curleft;
}
function findPosY(obj) {
  var curtop = 0;
  if (obj.offsetParent) {
    while (obj.offsetParent) {
      curtop += obj.offsetTop
      obj = obj.offsetParent;
    }
  } else if (obj.y) {
    curtop += obj.y;
  }
  return curtop;
}

function getMouseXY(e) {
  if (IE) { // grab the x-y pos.s if browser is IE
    tempX = event.clientX + document.body.scrollLeft;
    tempY = event.clientY + document.body.scrollTop;
  }
  else {  // grab the x-y pos.s if browser is NS
    tempX = e.pageX;
    tempY = e.pageY;
  }
}