function redirectURL(url) 

{

  window.location.href = url;

}



function UA(){

  var v = navigator.appVersion.toLowerCase(), u = navigator.userAgent.toLowerCase(), n = navigator.appName;

  this.mac = (v.indexOf("mac")+1);

  this.win = (v.indexOf("win")+1);

  this.nn = (n == "Netscape");

  this.ie = (n == "Microsoft Internet Explorer");

  this.aol = (u.indexOf("aol")+1);

  this.opera = (u.indexOf("opera")+1);

  this.ver = (this.ie) ? parseFloat(v.split('msie ')[1]) : parseFloat(v);

  this.major = this.ver.toString().split('.')[0];

	this.minor = this.ver.toString().split('.')[1];

	this.v4 = (this.major == 4);

	this.os = (this.mac) ? 'mac' : (this.win) ? 'win' : navigator.platform;

  this.name = (this.nn) ? 'nn' : (this.ie) ? 'ie' : n;

  this.codeName = this.name +'_'+ parseInt(this.ver) + '_'+ this.os;

}

var ua = new UA();



var onloadHandlers = [];

function loadEvents() {

  for(var i=0; i<onloadHandlers.length; i++) {

    eval(onloadHandlers[i]);

  }

}

window.onload = loadEvents;



var onresizeHandlers = [];

function resizeEvents() {

  for(var i=0; i<onresizeHandlers.length;i++) {

    eval(onresizeHandlers[i]);

  }

}

window.onresize = resizeEvents;



function handleResize(init) {

  if(!(document.layers)) return;

  if(init==true) with (navigator) {

    document.pgW=innerWidth;

    document.pgH=innerHeight;

    onresizeHandlers[onresizeHandlers.length] = 'handleResize()';

  }

  else if (innerWidth!=document.pgW || innerHeight!=document.pgH) location.reload();

}

handleResize(true);



function getObjByName(name,doc) {

  var o = 0;

  if(!doc) doc = document;

  if(doc[name]) o=doc[name];

  if(document.all && doc.all[name]) o=doc.all[name];

  if(o) {

    if(!o.getElementsByTagName) o.getElementsByTagName = getElementsArray;

    return o;

  }

  if(document.layers) {

    for(var i=0;i < doc.layers.length;i++){

      var lyrdoc = doc.layers[i].document;

      if(lyrdoc[name]) return lyrdoc[name];

      if(lyrdoc.layers.length > 0) {

        var o = getObjByName(name,lyrdoc);

        if(o) return o;

      }

    }

  }

  return 0;

}

if(!document.getElementById) document.getElementById = getObjByName;



function getElementsArray(el) {

  if(document.layers) {

    var doc = (this == document) ? document : this.document;

    switch(el) {

      case 'img' : return doc.images;

      case 'a' : return doc.links;

      case 'div' : return doc.layers;

      case 'form' : return doc.forms;

      default : return 0;

    }

  }

  if(document.all) return this.all.tags(el);

  return 0;

}

if(!document.getElementsByTagName) document.getElementsByTagName = getElementsArray;

if(document.layers) Layer.prototype.getElementsByTagName = getElementsArray;



function show(div){

  if(document.all) window.document.all[div].style.visibility = 'visible';

  else if(document.layers) getObjByName(div).visibility = 'show';

  else document.getElementById(div).style.visibility = 'visible';

}

function hide(div){

  if(document.all) window.document.all[div].style.visibility = 'hidden';

  else if(document.layers) getObjByName(div).visibility = 'hide';

  else document.getElementById(div).style.visibility = 'hidden';

}



function swapImg() {

  if(!document.images) return;

  var args = swapImg.arguments;

  for(var i=0;i < args.length;i+=2) {

    var imgSrc = (args[i + 1].indexOf('[') != -1) ? eval(args[i + 1] + '.src') : args[i + 1];

    if(getObjByName(args[i])) getObjByName(args[i]).src = imgSrc;

  }

}



function setCookie(name,value,expires) {

  document.cookie = escape(name)+'='+escape(value)+'; expires='+expires.toGMTString();

}



function getCookie(name) {

  var value,nl,cl,i,j,e;

  name+='=';

  value = 0;

  nl = name.length;

  cl = document.cookie.length;

  i = 0;

  while (i < cl) {

    j = i+nl;

    if(document.cookie.substring(i,j) == name) {

      e = document.cookie.indexOf(';',j);

      if(e == -1) e = document.cookie.length;

      value = unescape(document.cookie.substring(j,e));

      break;

    }

    i = document.cookie.indexOf(' ', i) + 1;

    if (i == 0) break;

  }  

  return value;

}



function openNASAWindow(url)

{

  if (url != "#")

  {

    var positionX = screen.width;

    var positionY = ((screen.height)/2);



    var sizeX = 720;

    var sizeY = 640;

    

    var strWindowFeatures = "";

    strWindowFeatures += 'menubar=yes,location=yes,toolbar=yes,directories=yes,scrollbars=yes,status=yes,resizable=yes,outerWidth='+720+',outerHeight='+640+',width='+720+'height='+640+',left='+80+',top='+60+'screenX='+80+',screenY='+60;

    winPopupWindow = window.open(url, "nasawindow", strWindowFeatures);

    winPopupWindow.focus();

  }

}



function preLoad(a) {

  var o = [];

  for(var i=0; i<a.length; i++) {

    o[i] = new Image();

    o[i].src = '/images/'+a[i]+'_1.gif';

  }

}





function NewWindow(mypage, myname, w, h, scroll) {

	var winl = (screen.width - w) / 2;

	var wint = (screen.height - h) / 2;

	winprops = 'height='+h+',width='+w+',top='+wint+',left='+winl+',scrollbars='+scroll+',resizable'

	win = window.open(mypage, myname, winprops)

	if (parseInt(navigator.appVersion) >= 4) { win.window.focus(); }

}



preLoad('placeholder/navigation/topnav/nav_top_0','placeholder/navigation/topnav/nav_top_1','placeholder/navigation/topnav/nav_top_2','placeholder/navigation/topnav/nav_top_3','placeholder/navigation/topnav/nav_top_4','placeholder/navigation/topnav/nav_top_5');