function jumpMenu(targ,selObj,restore){ //v3.0

  eval(targ+".location='"+selObj.options[selObj.selectedIndex].value+"'");

  if (restore) selObj.selectedIndex=0;

  }



var ie4=(document.all && !document.getElementById) ? 1 : 0



var ie5=(document.all && document.getElementById) ? 1 : 0



var ie=(ie4 || ie5) ? 1 : 0



var ns4=(document.layers) ? 1 : 0



var ns6=(!document.all && document.getElementById) ? 1 : 0



var ns=(ns4 || ns6) ? 1 : 0



var mac=(navigator.platform && navigator.platform.indexOf("Mac")!= -1)?1:0;



var macie4 = ((navigator.appVersion.indexOf('Macintosh')!=-1)&&(navigator.appVersion.indexOf('MSIE 4.')!=-1)) ? 1 : 0



var browserVersion = parseInt(navigator.appVersion);



var oldBrowser = (browserVersion < 4) ? 1 : 0









function preloadImages() { //v3.0



  var d=document; if(d.images){ if(!d.p) d.p=new Array();



    var i,j=d.p.length,a=preloadImages.arguments; for(i=0; i<a.length; i++)



    if (a[i].indexOf("#")!=0){ d.p[j]=new Image; d.p[j++].src=a[i];}}



}







function swapImgRestore() { //v3.0



  var i,x,a=document.sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;



}







function findObj(n, d) { //v3.0



  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {



    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}



  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];



  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=findObj(n,d.layers[i].document); return x;



}







function swapImage() { //v3.0



  var i,j=0,x,a=swapImage.arguments; document.sr=new Array; for(i=0;i<(a.length-2);i+=3)



   if ((x=findObj(a[i]))!=null){document.sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}



}



preloadImages('images/nav_technology_on.gif',

'images/nav_ancients_on.gif',

'images/findoutmore_on.gif',

'images/nav_earth_on.gif',

'images/nav_glossary_on.gif',

'images/nav_mankind_on.gif',

'images/nav_news_on.gif',

'images/nav_numbers_on.gif',

'images/nav_sciencequest_on.gif',

'images/nav_space_on.gif')


var newWindow;

function openWindow (destination)

{



 if ((navigator.platform && navigator.platform.indexOf("Mac")!= -1) &&



document.all) {newWindow =



window.open(destination,"newWindow","scrollbars=yes,width=440,height=419");}



 else {newWindow =



window.open(destination,"newWindow","scrollbars=yes,width=440,height=435");}



 newWindow.focus();



 return false;



}