// Design by: Zehno
// Programmer: Eric J. Schmidt
// Client: Columbia University School of Social Work
// Date: July 2002
// Copyright: 2002 All Rights Reserved
// zehno: http://www.zehno.com
// Cross-Media Communications
// evanSchmidt design: http://www.vdesign.com
// Linking Art to the Web...

// ** cookie handling starts here **
// name - name of the cookie
// value - value of the cookie
// [expires] - expiration date of the cookie (defaults to end of current session)
// [path] - path for which the cookie is valid (defaults to path of calling document)
// [domain] - domain for which the cookie is valid (defaults to domain of calling document)
// [secure] - Boolean value indicating if the cookie transmission requires a secure transmission
// * an argument defaults when it is assigned null as a placeholder
// * a null placeholder is not required for trailing omitted arguments

function setCookie(name, value, expires, path, domain, secure) {
// 8.01.02 - eschmidt@vdesign.com
// added to make cookie expire in 1 year if not sent as variable
  if (!expires) {
// create an instance of the Date object
    var now = new Date();
// fix the bug in Navigator 2.0, Macintosh
    fixDate(now);
// cookie expires in one year (actually, 365 days)
// 365 days in a year
// 24 hours in a day
// 60 minutes in an hour
// 60 seconds in a minute
// 1000 milliseconds in a second
    now.setTime(now.getTime() + 365 * 24 * 60 * 60 * 1000);
    var expires = now;
 }
  var curCookie = name + "=" + escape(value) +
      ((expires) ? "; expires=" + expires.toGMTString() : "") +
      ((path) ? "; path=" + path : "") +
      ((domain) ? "; domain=" + domain : "") +
      ((secure) ? "; secure" : "");
  document.cookie = curCookie;
}

// name - name of the desired cookie
// * return string containing value of specified cookie or null if cookie does not exist
function getCookie(name) {
  var dc = document.cookie;
  var prefix = name + "=";
  var begin = dc.indexOf("; " + prefix);
  if (begin == -1) {
    begin = dc.indexOf(prefix);
    if (begin != 0) return null;
  } else
    begin += 2;
  var end = document.cookie.indexOf(";", begin);
  if (end == -1)
    end = dc.length;
  return unescape(dc.substring(begin + prefix.length, end));
}

// name - name of the cookie
// [path] - path of the cookie (must be same as path used to create cookie)
// [domain] - domain of the cookie (must be same as domain used to create cookie)
// * path and domain default if assigned null or omitted if no explicit argument proceeds
function deleteCookie(name, path, domain) {
  if (getCookie(name)) {
    document.cookie = name + "=" +
    ((path) ? "; path=" + path : "") +
    ((domain) ? "; domain=" + domain : "") +
    "; expires=Thu, 01-Jan-70 00:00:01 GMT";
  }
}

// date - any instance of the Date object
// * hand all instances of the Date object to this function for "repairs"
function fixDate(date) {
  var base = new Date(0);
  var skew = base.getTime();
  if (skew > 0)
    date.setTime(date.getTime() - skew);
}
// ** cookie handling ends here **
// ** image rotation starts here **

function ShowImg(place) {
var imgPlace = getCookie("imgNum");
if (!imgPlace) {
    imgPlace = 0;
}
if (place == text) {
  var strTemp ='<img src="' + place[imgPlace] + '" usemap="#textMap" border="0" alt="' + textAlt[imgPlace] + '" width="385" height="159">';
} else {
  var strTemp ='<img src="' + place[imgPlace] + '" border="0" width="325" height="159">';
}
document.write(strTemp);
}

function launchOpener(place) {
  var imgPlace = getCookie("imgNum");
if (!imgPlace) {
    imgPlace = 0;
}
  var theLink = place[imgPlace];
// added 8.23.02 to accommodate images with no link value
  if (!theLink){
	return false;
  } else {
  MM_openBrWindow(theLink,'popup','toolbar=yes,resizable=yes,scrollbars=yes,width=510,height=300')
  }
}
// ** image rotation ends here **