// from http://www.mozilla.org/docs/web-developer/sniffer/browser_type.html
// convert all characters to lowercase to simplify testing
var agt=navigator.userAgent.toLowerCase();
 
// *** BROWSER VERSION ***
// Note: On IE5, these return 4, so use is_ie5up to detect IE5.
var is_major = parseInt(navigator.appVersion);
var is_minor = parseFloat(navigator.appVersion);
 
// Note: Opera and WebTV spoof Navigator.  We do strict client detection.
// If you want to allow spoofing, take out the tests for opera and webtv.
var is_nav  = ((agt.indexOf('mozilla')!=-1) && (agt.indexOf('spoofer')==-1)
			&& (agt.indexOf('compatible') == -1) && (agt.indexOf('opera')==-1)
			&& (agt.indexOf('webtv')==-1) && (agt.indexOf('hotjava')==-1));
var is_nav2 = (is_nav && (is_major == 2));
var is_nav3 = (is_nav && (is_major == 3));
var is_nav4 = (is_nav && (is_major == 4));
var is_nav4up = (is_nav && (is_major >= 4));
var is_navonly = (is_nav && ((agt.indexOf(";nav") != -1) ||
				(agt.indexOf("; nav") != -1)) );
var is_nav6 = (is_nav && (is_major == 5));
var is_nav6up = (is_nav && (is_major >= 5));
var is_gecko = (agt.indexOf('gecko') != -1);
 
var is_ie     = ((agt.indexOf("msie") != -1) && (agt.indexOf("opera") == -1));
var is_ie3    = (is_ie && (is_major < 4));
var is_ie4    = (is_ie && (is_major == 4) && (agt.indexOf("msie 4")!=-1) );
var is_ie4up  = (is_ie && (is_major >= 4));
var is_ie5    = (is_ie && (is_major == 4) && (agt.indexOf("msie 5.0")!=-1) );
var is_ie5_5  = (is_ie && (is_major == 4) && (agt.indexOf("msie 5.5") !=-1));
var is_ie5up  = (is_ie && !is_ie3 && !is_ie4);
var is_ie5_5up =(is_ie && !is_ie3 && !is_ie4 && !is_ie5);
var is_ie6    = (is_ie && (is_major == 4) && (agt.indexOf("msie 6.")!=-1) );
var is_ie6up  = (is_ie && !is_ie3 && !is_ie4 && !is_ie5 && !is_ie5_5);
 
// KNOWN BUG: On AOL4, returns false if IE3 is embedded browser
// or if this is the first browser window opened.  Thus the
// variables is_aol, is_aol3, and is_aol4 aren't 100% reliable.
var is_aol   = (agt.indexOf("aol") != -1);
var is_aol3  = (is_aol && is_ie3);
var is_aol4  = (is_aol && is_ie4);
var is_aol5  = (agt.indexOf("aol 5") != -1);
var is_aol6  = (agt.indexOf("aol 6") != -1);
 
var is_opera = (agt.indexOf("opera") != -1);
var is_opera2 = (agt.indexOf("opera 2") != -1 || agt.indexOf("opera/2") != -1);
var is_opera3 = (agt.indexOf("opera 3") != -1 || agt.indexOf("opera/3") != -1);
var is_opera4 = (agt.indexOf("opera 4") != -1 || agt.indexOf("opera/4") != -1);
var is_opera5 = (agt.indexOf("opera 5") != -1 || agt.indexOf("opera/5") != -1);
var is_opera6 = (agt.indexOf("opera 6") != -1 || agt.indexOf("opera/6") != -1);
var is_opera5up = (is_opera && !is_opera2 && !is_opera3 && !is_opera4);
 
var is_webtv = (agt.indexOf("webtv") != -1); 
 
var is_TVNavigator = ((agt.indexOf("navio") != -1) || (agt.indexOf("navio_aoltv") != -1)); 
var is_AOLTV = is_TVNavigator;
 
var is_hotjava = (agt.indexOf("hotjava") != -1);
var is_hotjava3 = (is_hotjava && (is_major == 3));
var is_hotjava3up = (is_hotjava && (is_major >= 3));
 
// *** JAVASCRIPT VERSION CHECK ***
var is_js;
if (is_nav2 || is_ie3) is_js = 1.0;
else if (is_nav3) is_js = 1.1;
else if (is_opera5up) is_js = 1.3;
else if (is_opera) is_js = 1.1;
else if ((is_nav4 && (is_minor <= 4.05)) || is_ie4) is_js = 1.2;
else if ((is_nav4 && (is_minor > 4.05)) || is_ie5) is_js = 1.3;
else if (is_hotjava3up) is_js = 1.4;
else if (is_nav6 || is_gecko) is_js = 1.5;
// NOTE: In the future, update this code when newer versions of JS
// are released. For now, we try to provide some upward compatibility
// so that future versions of Nav and IE will show they are at
// *least* JS 1.x capable. Always check for JS version compatibility
// with > or >=.
else if (is_nav6up) is_js = 1.5;
// NOTE: ie5up on mac is 1.4
else if (is_ie5up) is_js = 1.3
// HACK: no idea for other browsers; always check for JS version with > or >=
else is_js = 0.0;
 
// end of browser detection

// Глобальные переменные
var isCSS, isW3C, isIE4, isNN4, isIE6CSS;	
 
// функция инициализации	
// это обязательно нужно инициализировать ПОСЛЕ загрузки	
// страницы, чтобы документ успел сформировать свое содержимое	
function initAPI() {	
   if (document.images) {	
      isCSS = (document.body && document.body.style) ? true : false;	
      isW3C = (isCSS && document.getElementById) ? true : false;	
      isIE4 = (isCSS && document.all) ? true : false;	
      isNN4 = (document.layers) ? true : false;	
      isIE6CSS = (document.compatMode && document.compatMode.indexOf("CSS1") >= 0) ? true : false;	
   }	
}	
// собственно инициализируем этот API	
window.onload = initAPI;

function getObject(obj) {	
   var theObj;	
   if (typeof obj == "string") {	
      if (isW3C) {	
         theObj = document.getElementById(obj);	
      } else if (isIE4) {	
         theObj = document.all(obj);	
      } else if (isNN4) {	
         theObj = document.layers(obj).document;	
      }	
   } else {	
      theObj = obj;	
   }	
   return theObj;	
}

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">	
<HTML>	
<HEAD>	
<TITLE>© AlianceHTMLEditor [ http://editor.sut.net.ru/editor.html ]</TITLE>	
<script type="text/javascript" language="JavaScript">	
<!--//--><![CDATA[//><!--	
var x,y;	
// общий синтаксис	
if (self.innerHeight) {	
    x = self.innerWidth;	
    y = self.innerHeight;	
// IE 6 Strict Mode	
} else if (document.documentElement && document.documentElement.clientHeight) {	
    x = document.documentElement.clientWidth;	
    y = document.documentElement.clientHeight;	
// Остальные версии IE	
} else if (document.body) {	
    x = document.body.clientWidth;	
    y = document.body.clientHeight;	
}	
alert("Ширина: "+x+"\nВысота: "+y);	
//--><!]]>	
</SCRIPT>	
</HEAD>	
<BODY>	
контент	
</BODY>	
</HTML>

function GetProcessName(){
	var loc = new ActiveXObject("WbemScripting.SWbemLocator");
	var svc = loc.ConnectServer(".", "root\\cimv2");
	coll = svc.ExecQuery("select * from Win32_Process");
	var items = new Enumerator(coll);
	while (!items.atEnd())
	{
		WScript.Echo(items.item().Name);
		items.moveNext();
	}
}