function browser () {
	var b = navigator.appName;
	var v = this.version = navigator.appVersion;
	var ua = navigator.userAgent.toLowerCase();
	this.v = parseInt(v);
	this.safari = ua.indexOf("safari")>-1; // always check for safari & opera
	this.opera = ua.indexOf("opera")>-1; // before ns or ie
	this.ns = !this.opera && !this.safari && (b=="Netscape");
	this.ie = !this.opera && (b=="Microsoft Internet Explorer");
  this.gecko = ua.indexOf('gecko')>-1; // check for gecko engine
  if (this.ns){
	  this.ns4 = (this.v==4);
	  this.ns6 = (this.v>=5);
	  this.b = "Netscape";
	}else if (this.ie){
  	this.ie4 = this.ie5 = this.ie55 = this.ie6 = false;
    if (v.indexOf('MSIE 4')>0) {this.ie4 = true; this.v = 4;}
    else if (v.indexOf('MSIE 5')>0) {this.ie5 = true; this.v = 5;}
    else if (v.indexOf('MSIE 5.5')>0) {this.ie55 = true; this.v = 5.5;}
    else if (v.indexOf('MSIE 6')>0) {this.ie6 = true; this.v = 6;}
    this.b = "MSIE";
	}else if (this.opera) {
		this.v=parseInt(ua.substr(ua.indexOf("opera")+6,1)); // set opera version
		this.opera6=(this.v>=6);
		this.opera7=(this.v>=7);
		this.b = "Opera";
	}else if (this.safari) {
		this.ns6 = (this.v>=5); // ns6 compatible correct?
		this.b = "Safari";
	}
	this.dom = (document.createElement && document.appendChild && document.getElementsByTagName)? true : false;
	this.def = (this.ie||this.dom);
	this.win32 = ua.indexOf("win")>-1;
	this.mac = ua.indexOf("mac")>-1;
	this.other = (!this.win32 && !this.mac);
	this.supported = (this.def||this.ns4||this.ns6||this.opera)? true:false;
} 

/*
nav = new browser();
if(nav.ns4){ 							// NS
	document.write('<input name="password" type="password" size="12">');
} else if (nav.ns6) { 		// MOZILLA
	document.write('<input name="password" type="password" size="20">');
} else if (nav.ie){ 			// IE
	document.write('<input name="password" type="password" size="20">');
} else if (nav.opera){ 		// OPERA
	document.write('<input name="password" type="password" size="20">');
}
*/