var collectionName;

function setCollection(whichButton)
{
   collectionName	= whichButton.value;
}
function setCollectionByDiv(thatDiv)
{
   var thatRadio	= thatDiv.getElementsByTagName("input")[0];
//   alert("setCollectionName("+thatDiv+" "+thatRadio.value);
   collectionName	= thatRadio.value;
   thatRadio.checked	= true;
   //alert(thatRadio.value +" "+thatRadio.checked);
   reCollection();
}
function reCollection()
{
   //alert("reCollection(): " +collectionName);
   //alert("originating document: " + window.document.location.href);
   //namedCollage(collectionName, 0, 0, "000000");
   //document.getElementById('appletsFrame').
   //alert("frame: " + top.frames['applets'].document);
   //alert("iframe: " + document.getElementById('appletsFrame').contentWindow.name);
   namedCollage(collectionName);
}
function launchCollection(collectionSelect)
{
   //alert('launchCollection');
   var whichCollage = 
      collectionSelect.options[collectionSelect.selectedIndex].value;
   namedCollage(whichCollage, 0, document.getElementById('appletsFrame').contentWindow, "000000");
   //namedCollage(whichCollage, 0, 0, "000000");
}

var launchWindow;

var NEED_POPUPS = "You need to allow popups for our site\nto use combinFormation.";

function focusOrNeedPopups(win, url)
{
   if (!win)
      alert(NEED_POPUPS);
   else
   {
      if (url)
	 win.location	= url;
      win.focus();
   }
}


function launchPopup(url)
{
   launchWindow = window.open(url, "cmlaunch", 'width=680, height=600, scrollbars,status, resizable');
   focusOrNeedPopups(launchWindow);
}

var popupArgs	= 'resizable=yes,scrollbars=yes,location=yes';

var ourWindow;

function supplementalPopup(href)
{
  ourWindow = popup10(href, 'javadownload', 800, 600, popupArgs, true);
}
function paperPopup(paper)
{
   ourWindow = supplementalPopup("../research/publications/"+paper);
}

function relativeAddr(url)
{
   var referrer		= location.href;
   if ((url.indexOf("http://") != 0) &&
       (url.indexOf("/") != 0))
      url =  referrer.substring(0, referrer.lastIndexOf("/"))+"/" + url;
   return url;
}
function regeneratePopup(infospace, title)
{
   infospace = relativeAddr(infospace);
   var url = '/combinFormation/launch/regenerate.html?infospace='+
	infospace;
   if (title)
	url += '&title=' + title;
//   alert(url);
   mywindow = window.open(url, "cmlaunch", "width=500, height=600, scrollbars,status, resizable, top="+(screen.height-670)+", left="+(screen.width-570));
    focusOrNeedPopups(mywindow);
}
function support(hash)
{
   hash		= hash ? hash : "";
   supportWindow = opener ? opener : this;
   var dir = machineDir(supportWindow.location.pathname);
   var location = rootDir + dir + "/support.html" + hash;
   focusOrNeedPopups(supportWindow, location);
}
function machineDir(loc)
{
   var slash = loc.indexOf("/");
   if (slash == 0)
      return machineDir(loc.substring(1));
   var lastSlash = loc.lastIndexOf("/");
   var result = loc.substring(0, slash);
   if (result.indexOf("achine")!= -1)
      return result;
   else
      return machineDir(loc.substring(slash+1))
}
function supportPopup(url)
{
   supportWindow = window.open(url, "cmsupport", "width=600, height="+
			       (screen.height - 100) + ", scrollbars");
   focusOrNeedPopups(supportWindow);
}


var navPreloads = ['images/buttons/aboutButton_anim.gif', 'images/launchAnim.gif', 'images/buttons/supportButton_anim.gif', 'images/buttons/prefButton_anim.gif', 'images/animatedCredits3.gif'];

function preloadNav()
{
   preload(navPreloads);
}

function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_preloadImages() 
{
  var d=document; 
	if(d.images){ 
	  if(!d.MM_p) 
		  d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; 
		for(i=0; i<a.length; i++)
      if (a[i].indexOf("#")!=0){ 
			  d.MM_p[j]=new Image; 
				d.MM_p[j++].src=a[i];
			}
	}
}
function preload(toPreload)
{
  if (toPreload)	
     for (var i=0; i<toPreload.length; i++)
     {
	var thatImage= new Image();
	if (thatImage)
	   thatImage.src= toPreload[i];
     }
}
function preload2() {
  document.preload = new Array();
	if (document.images) {
	  for (var i=0; i<preloadImages.arguments.length; i++) {
		  document.preload[i] = new Image();
			document.preload[i].src = preloadImages.arguments[i];
		}
	}
}

function MM_findObj(n, d) { //v4.0
  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=MM_findObj(n,d.layers[i].document);
  if(!x && document.getElementById) x=document.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}
function MM_reloadPage(init) {  //reloads the window if Nav4 resized
  if (init==true) with (navigator) {if ((appName=="Netscape")&&(parseInt(appVersion)==4)) {
    document.MM_pgW=innerWidth; document.MM_pgH=innerHeight; onresize=MM_reloadPage; }}
  else if (innerWidth!=document.MM_pgW || innerHeight!=document.MM_pgH) location.reload();
}
MM_reloadPage(true);

var supportPrefix =  '<tr><td valign="bottom"><hr noshade color="#3399CC" size="1">\n<font size="1">';

var supportBody = 'combinFormation requires <a href="javascript:support()">up-to-date\n hardware and java</a>.';


var supportBodyAndSuffix = supportBody + "</font></font><br><br></td>\n</tr>";

var supportCell = supportPrefix + supportBodyAndSuffix;

//var supportCss = '<p 
function supportDir()
{
   var loc = location.href;
   var thatDir = ((loc.indexOf("combinformation")  > -1) || 
		  (loc.indexOf("combinFormation") > -1) || (loc.indexOf("cf") > -1)) ?
		     "combinformation" : "collageMachine"
   return rel(rootDir) + thatDir + "/";
}

function supportHref(optionalSection)
{
   var result = supportDir() + 'support.html';
   if (optionalSection)
      result += "?section=" + optionalSection;
   return result;
}
function openSupport(optionalSection)
{
   var prev = self.opener;
   var dest = supportHref(optionalSection);
   
   if (prev && !prev.closed && (prev != self))
   {
      prev.location	= "about:blank";
      prev.location	= dest;
      prev.focus();
   }
   else
   {
      supplementalPopup(dest);
   }   
}
function openSupportSameWindow(optionalSection)
{
   self.location.href = supportHref(optionalSection);
}

function fixSearchString(str)
{
   var words = str.split(/\s+/);
   var result= "";
   var last  = words.length - 1;
   
   for (var i=0; i < last; i++)
      result += escape(words[i]) + "+";
   result += escape(words[last]);

   return result;
}

function unfixSearchString(str)
{
   var words = str.split("+");
   var result= "";
   var last  = words.length - 1;
   
   for (var i=0; i < last; i++)
      result += unescape(words[i]) + " ";
   result += unescape(words[last]);
//   alert(result);
   return result;
}