var use_gebi = false;
var use_css = false;
var use_layers = false;

var userBrowser = navigator.userAgent.toLowerCase();
var isFireFox = ((userBrowser.indexOf("gecko") >= 0) ? true : false);

if (document.getElementById)
  use_gebi = true;
else if (document.all)
  use_css = true;
else if (document.layers)
  use_layers = true;

function getDigits(sVal) {
  var sChanged = "";
  var ch;
  for (i=0; i<sVal.length; i++) {
    ch = sVal.charAt(i);
    if (ch < '0' || ch > '9')
      if (ch != '.')
        continue;
    sChanged += ch;
  }
  return sChanged;
}

function VerifyNum(txt) {
  var sValue = "";
  sValue = txt.value;
  var sDigits = getDigits(sValue);
  var len = sDigits.length;
  var sNew="";
  if (txt.value == "")
    return true;
  sNew = sDigits;
  txt.value = sNew;
  return true;
}

function viewImage(itype, iid) {
  window.open("view.php?itype=" + itype + "&iid=" + iid, '', 'height=200,width=200,directories=no,location=no,menubar=no,resizable,status=no,toolbar=no,history=no,scrollbars');
}