var theTop = 40
	
	var menu, scrollIt
	
	// posicion actual
	var old = theTop
	// a true, la posición del menu se mantiene a "theTop" pixels, aunque se desplace la pagina verticalmente
	// a false, el menu es fijo
	var scrollIt = true
	
	// INICIALIZACION
	function init() {
		// obtiene referencia al objeto con el menu
		menu = new getObj('menu')
		movemenu()
		// obtiene si hay que mantenerlo fijo o moverlo, a partir del checkbox del propio menu
		//scrollIt = (document.layers) ?
		//	document.menu.document.forms[0].elements[0].checked :
		//	document.forms["capamenu"].elements[0].checked
		// inicia el proceso que mantiene la posicion a "theTop" pixels
		movemenu()
	}

	//MOVIMIENTO
	function movemenu() {
		if (scrollIt) {
			if (window.innerHeight) {
				  pos = window.pageYOffset
			} else if (document.documentElement && document.documentElement.scrollTop) {
				pos = document.documentElement.scrollTop
			} else if (document.body) {
				  pos = document.body.scrollTop
			}
			
			if (pos < theTop)
				pos = theTop
			else
				pos += 30
			if (pos == old)
				menu.style.top = pos + 'px'
	
			old = pos
		}
		
		moveID = setTimeout('movemenu()',5)
	}

	//OBTENCION DE REFERENCIA AL OBJETO
	function getObj(name) {
	  // si soporta DOM Lelvel 2
	  if (document.getElementById) {
	  	this.obj = document.getElementById(name)
		this.style = document.getElementById(name).style
	  // si soporta el DOM del IE4.x
	  } else if (document.all) {
		this.obj = document.all[name]
		this.style = document.all[name].style
	  // si soporta el DOM del N4.x
	  } else if (document.layers) {
	   	this.obj = document.layers[name]
	   	this.style = document.layers[name]
	  }
	}

	window.onload = init
	if (document.captureEvents) {		//N4 requiere invocar la funcion captureEvents
		document.captureEvents(Event.LOAD)
	}
	
	var persistclose=1 //set to 0 or 1. 1 means once the bar is manually closed, it will remain closed for browser session
	var startX = 30 //set x offset of bar in pixels
	var startY = 5 //set y offset of bar in pixels
	//var verticalpos="frombottom" //enter "fromtop" or "frombottom"
	
	function iecompattest(){
	return (document.compatMode && document.compatMode!="BackCompat")? document.documentElement : document.body
	}
	
	function get_cookie(Name) {
	var search = Name + "="
	var returnvalue = "";
	if (document.cookie.length > 0) {
	offset = document.cookie.indexOf(search)
	if (offset != -1) {
	offset += search.length
	end = document.cookie.indexOf(";", offset);
	if (end == -1) end = document.cookie.length;
	returnvalue=unescape(document.cookie.substring(offset, end))
	}
	}
	return returnvalue;
	}
	
	function closepop(){
	if (persistclose)
	document.cookie="remainclosed=1"
	document.getElementById("menu").style.visibility="hidden"
	}
	
	function staticbar(){
	barheight=document.getElementById("menu").offsetHeight
	var ns = (navigator.appName.indexOf("Netscape") != -1) || window.opera;
	var d = document;
	function ml(id){
	var el=d.getElementById(id);
	if (!persistclose || persistclose && get_cookie("remainclosed")=="")
	el.style.visibility="visible"
	if(d.layers)el.style=el;
	el.sP=function(x,y){this.style.right=x+"px";this.style.top=y+"px";};
	el.x = startX;
	if (verticalpos=="fromtop")
	el.y = startY;
	else{
	el.y = ns ? pageYOffset + innerHeight : iecompattest().scrollTop + iecompattest().clientHeight;
	el.y -= startY;
	}
	return el;
	}
	window.stayTopLeft=function(){
	if (verticalpos=="fromtop"){
	var pY = ns ? pageYOffset : iecompattest().scrollTop;
	ftlObj.y += (pY + startY - ftlObj.y)/8;
	}
	else{
	var pY = ns ? pageYOffset + innerHeight - barheight: iecompattest().scrollTop + iecompattest().clientHeight - barheight;
	ftlObj.y += (pY - startY - ftlObj.y)/8;
	}
	ftlObj.sP(ftlObj.x, ftlObj.y);
	setTimeout("stayTopLeft()", 10);
	}
	ftlObj = ml("menu");
	stayTopLeft();
	}
	
	if (window.addEventListener)
	window.addEventListener("load", staticbar, false)
	else if (window.attachEvent)
	window.attachEvent("onload", staticbar)
	else if (document.getElementById)
	window.onload=staticbar