function openatoz() {
  var station = "KTCA";
  var url = "http://www.pbs.org/cgi-registry/stationfinder/setallcookies.cgir?s=" + station + "&address=/inav/sitesa2z/local.html";
  floater=window.open(url,"sitesa2z",'toolbar=0,location=0,directories=0,scrollbars=1,status=0,menubar=0,resizable=1,width=420,height=300') 
  return false;
} 



function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

function changeImages() {
	if (document.images) {
		var img;
		for (var i=0; i<changeImages.arguments.length; i+=2) {
			img = null;
			if (document.layers) {
				img = findElement(changeImages.arguments[i],0);
			}
			else {
				img = document.images[changeImages.arguments[i]];
			}
			if (img) {
				img.src = changeImages.arguments[i+1];
			}
		}
	}
}

var preloadFlag = false;
function preloadImages() {
	if (document.images) {
		nav_01_over = newImage("images/nav_01-over.gif");
		nav_02_over = newImage("images/nav_02-over.gif");
		nav_03_over = newImage("images/nav_03-over.gif");
		nav_04_over = newImage("images/nav_04-over.gif");
		nav_05_over = newImage("images/nav_05-over.gif");
		nav_06_over = newImage("images/nav_06-over.gif");
		preloadFlag = true;
	}
}

function popUp(URL) {
day = new Date();
id = day.getTime();
eval("page" + id + " = window.open(URL, '" + id + "', 'toolbar=0,scrollbars=1,location=0,statusbar=0,menubar=0,resizable=1,width=500,height=500');");
}
<!--
function popup(newUrl,windowWidth,windowHeight) {
  var features = "menubar=no,toolbar=no,location=no,directories=no,status=yes,scrollbars=yes,resizable=yes,copyhistory=no,width=" + windowWidth + ",height=" + windowHeight;
  SmallWin = window.open(newUrl,"popup",features);
  
  if (window.focus) {
    SmallWin.focus();
  }

  if (SmallWin.opener == null) SmallWin.opener = window;
  SmallWin.opener.name = "MainWindow";
  
}
//-->