code: function checkBrowser() {
  	this.ver = navigator.appVersion
  	this.dom = document.getElementById ? 1 : 0
  	this.ie5 = (this.ver.indexOf("MSIE 5") > -1 && this.dom) ? 1 : 0;
  	this.ie4 = (document.all && !this.dom) ? 1 : 0;
  	this.ns5 = (this.dom && parseInt(this.ver) >= 5) ? 1 : 0;
  	this.ns4 = (document.layers && !this.dom) ? 1 : 0;
  	this.bw = (this.ie5 || this.ie4 || this.ns4 || this.ns5)
  	return this
  }
docs: Default browsercheck, added to all scripts!