function iz(iz_what) {
 if (!iz_what) return navigator.appName+'; '+ navigator.userAgent+'; '+ navigator.vendor;
 var iz_wot = iz_what.toLowerCase();
 var iz_agnt = navigator.userAgent.toLowerCase();
 var iz_name = navigator.appName.toLowerCase();
 switch (iz_wot) {
  case 'cw': return !!(document.body.clientWidth);
  case 'iw': return !!(window.innerWidth);
  case 'df': return !!(document.createDocumentFragment);
  case 'dom': return !!(document.createElement);
  case 'all': return !!(document.all);
  case 'id': return !!(document.getElementById);
  case 'lyrs': return !!(document.layers);
  case 'ie': return !!(iz_agnt.indexOf('msie') != -1);
  case 'ns': return !!(iz_name.indexOf("netscape") != -1);
  case 'opera': return !!(iz_agnt.indexOf('opera') != -1);
  case 'moz': return !!(iz_agnt.indexOf('gecko') != -1);
  case 'safari': return !!((iz_agnt.indexOf('safari') != -1) || (document.childNodes && !document.all && !navigator.taintEnabled && !accentColorName));
  case 'mac': return !!(iz_agnt.indexOf('mac') != -1);
  case 'khtml': return !!((navigator.vendor == 'KDE')||(document.childNodes)&&(!document.all)&&(!navigator.taintEnabled));
  case 'agt': return iz_agnt;
  default: return !!(iz_agnt.indexOf(iz_wot) != -1);
 }
}
function iz_version(iz_ver_string, iz_test_ie) {
 if (iz_ver_string == null) {
  return 0.0;
 } else {
  if (iz_test_ie) {
    iz_ver_string = iz_ver_string.substring(iz_ver_string.indexOf("MSIE ") + 5);
  }
  var iz_tmp0 = "";
  var iz_tmp1 = "";
  var iz_tmp2 = "01234567890.";
  var iz_start = false;
  for (iz_ndx = 0; iz_ndx < iz_ver_string.length - 1; iz_ndx++) {
   iz_tmp1 = iz_ver_string.substring(iz_ndx, iz_ndx + 1);
   if (iz_tmp2.indexOf(iz_tmp1) != -1) {
    iz_tmp0 = iz_tmp0 + iz_tmp1;
    iz_start = true;
   } else {
    if (iz_start) {
     break;
    }
   }
  }
  if (iz_tmp0.length == 0) {
   return 0.0;
  } else {
    return parseFloat(iz_tmp0);
  }
 }
}
function getDocumentWidth() {
  var iz_w = 300;
  if (self.innerWidth) {
    iz_w = self.innerWidth;
  } else if (document.documentElement && document.documentElement.clientWidth) {
    iz_w = document.documentElement.clientWidth;
  } else if (document.body) {
    iz_w = document.body.clientWidth;
  }
  return iz_w;
}
function getDocumentHeight() {
  var iz_h = 300;
  if (self.innerHeight) {
    iz_h = self.innerHeight;
  } else if (document.documentElement && document.documentElement.clientHeight) {
    iz_h = document.documentElement.clientHeight;
  } else if (document.body) {
    iz_h = document.body.clientHeight;
  }
  return iz_h;
}
function getBrowserName() {
  var browserName = "unknown";
  if (iz("safari")) {
    browserName = "safari";
  } else if (iz("khtml")) {
    browserName = "khtml";
  } else if (iz("opera")) {
    browserName = "opera";
  } else if (iz("moz")) {
    browserName = "mozilla";
  } else if (iz("ns")) {
    if (iz_version(navigator.appVersion,false) >= 5.0) {
      browserName = "ns5up";
    } else {
      browserName = "ns4";
    }
  } else if (iz("ie") && (iz_version(navigator.appVersion,true) >= 5.0)) {
    if (!iz("mac")) {
      browserName = "ie5up";
    }
  }
  return browserName;
}