//Force Tables in  Netscape to go all the way to the right margin
//Pass 'IE' as the second argument to the function if you want to make
//sure IE doesn't put anything in(especially    where a table cell
//is supposed to be only 1px high

function makeIt (num,exception) {
	var browser = navigator.appName;
	var version = parseInt(navigator.appVersion);
	var width;
	
	if (browser == "Netscape" && version >= '4') {
		width = window.innerWidth;
		if (num == 'total') {
			//make sure path to spacer.gif is correct
			space = "<img class=\"widespacer\" src=\"/wgbh/nova/images02/spacer.gif\" width=\"" + width +"\" height=\"1\" border=\"0\" alt=\"\" />"; 
			return space;
		} else if (width <= num) {  
			space = '&nbsp;';
		} else {
			width = width - num; 
			//make sure path to spacer.gif is correct
			space = "<img class=\"widespacer\" src=\"/wgbh/nova/images02/spacer.gif\" width=\"" + width +"\" height=\"1\" border=\"0\" alt=\"\" />"; 
		}
	} else if (browser != "Netscape" && num == 'total') {
		space = '';
	} else if (browser != "Netscape" && exception == "IE") {
		space = '';		 	
	} else {
		space = '&nbsp;';
	}
	return space;
}
		
function makeItwide (num,exception) {
	var browser = navigator.appName;
	var version = parseInt(navigator.appVersion);
	var width;
	var max;
	max = 800;
	
	/* if (document.all)
	{	width = document.body.clientWidth; }
	else if (document.layers)
	{	width = window.innerWidth; } */
	
	width = document.body.clientWidth;

	if (width <= max) {
		width = max;
	}
	
	space = "<img class=\"widespacer\" src=\"/wgbh/nova/images02/spacer.gif\" width=\"" + width +"\" height=\"1\" border=\"0\" alt=\"\" />"; 
	
	return space;
}
		
//Force NN to reload on re-size
function fixNN () {
 	var ua = navigator.appName;
	var uanum = parseFloat(navigator.appVersion);
	if (ua == "Netscape" && uanum >= '4.08') {
		location.reload();
	} else {
		return;
	}
}
		
// rollover functions
function roll_off(imgName) {
	if(document.images)
	document[imgName].src = eval(imgName + '1.src');
}

function roll_on(imgName) {
	if(document.images)
	document[imgName].src = eval(imgName + '2.src');
}

function cfl_window(which_window, image_width, image_height) {
  var window_width = image_width + 46;
  var window_height = image_height + 175;
  newwin = window.open(which_window, "cfl_window", 
'toolbar=0,location=0,directories=0,scrollbars=1,status=0,menubar=0,resizable=1,width=' + window_width + ',height=' + window_height);
window.self.name = "cfl_parent";
//  movingwindow.focus();
}


// page manipulation js

function findimg()
{
 var imgs,i;
// Loop through all images, check if they contain the class roll
 imgs=document.getElementsByTagName('img');
 for(i=0;i<imgs.length;i++)
 {
  if(/roll/.test(imgs[i].className))
  {
// add the function roll to the parent Element of the image
  imgs[i].parentNode.onmouseover=function(){roll(this);};
  imgs[i].parentNode.onmouseout=function(){roll(this);};
  imgs[i].parentNode.onfocus=function(){roll(this);};
  imgs[i].parentNode.onblur=function(){roll(this);};
  }
 }
}
function roll(o)
{
 var i,isnode,src,ftype,newsrc,nownode;
// loop through all childNodes
 for (i=0;i<o.childNodes.length;i++)
 {
  nownode=o.childNodes[i];
// if the node is an element and an IMG set the variable and exit the loop
  if(nownode.nodeType==1 && /img/i.test(nownode.nodeName))
  {
   isnode=i;
   break;
  }
 }
// check src and do the rollover
 src = o.childNodes[isnode].src;
 ftype = src.substring(src.lastIndexOf('.'), src.length);
 if(/-on/.test(src))
 {
  newsrc = src.replace('-on','');
 }else{
  newsrc = src.replace(ftype, '-on'+ftype);
 }
 o.childNodes[isnode].src=newsrc;
}
window.onload=function(){
 findimg();
}