function randomString(strlenght) {
	var chars = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXTZabcdefghiklmnopqrstuvwxyz";
	var randomstring = '';
	for (var i=0; i<strlength; i++) {
		var rnum = Math.floor(Math.random() * chars.length);
		randomstring += chars.substring(rnum,rnum+1);
	}
	return randomstring;
}

if (document.layers) {navigator.family = "nn4"}
if (document.all) {navigator.family = "ie4"}
if (window.navigator.userAgent.toLowerCase().match("gecko")) {navigator.family = "gecko"}

function getElement(name) {
  if(document.getElementById && document.getElementById(name)) {
    return document.getElementById(name);
  }
  else if (document.all && document.all(name)) {
    return document.all(name);
  }
  else if (document.layers && document.layers[name]) {
    return document.layers[name];
  } else {
    return false;
  }
}