// Determine browser.

var isMinNS4 = (navigator.appName.indexOf("Netscape") >= 0 &&
                parseFloat(navigator.appVersion) >= 4) ? 1 : 0;
var isMinIE4 = (document.all) ? 1 : 0;
var isMinIE5 = (isMinIE4 && navigator.appVersion.indexOf("5.") >= 0) ? 1 : 0;
function getPageLeft(el) {
  var x=0;
  while (el.offsetParent != null) {
    x += el.offsetLeft;
    el = el.offsetParent;
  }
  x += el.offsetLeft;
  return x;
}
function getPageTop(el) {
  var y = 0;
  while (el.offsetParent != null) {
    y += el.offsetTop;
    el = el.offsetParent;
  }
  y += el.offsetTop;
  return y;
}
function getHeight(el) { return el.clientHeight;}
function getWidth(el) {return el.clientWidth;}