// JavaScript Document
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);
function createCookie(name,value,minutes)
{
	if (minutes)
	{
		var date = new Date();
		date.setTime(date.getTime()+(minutes*60*1000));
		var expires = "; expires="+date.toGMTString();
	}
	else var expires = "";
	document.cookie = name+"="+value+expires+"; path=/";
}
function toggleDiv (id) {
	var thisdiv = document.getElementById(id);
	if ((thisdiv.style.display == "block") || (thisdiv.style.display == '')) {
		thisdiv.style.display="none";
		createCookie(id,"none","10");
		createCookie("amsvisit","true","10");
	} else {
		thisdiv.style.display="block";
		createCookie(id,"block","10");
		createCookie("amsvisit","true","10");		
	}
}
function hideDiv (id) {
	var thisdiv = document.getElementById(id);
  thisdiv.style.display="none";
	createCookie(id,"none","10");
	createCookie("amsvisit","true","10");
}
function showDiv (id) {
	var thisdiv = document.getElementById(id);
  thisdiv.style.display="block";
	createCookie(id,"block","10");
	createCookie("amsvisit","true","10");
}
function readCookie(name)
{
	var nameEQ = name + "=";
	var ca = document.cookie.split(';');
	for(var i=0;i < ca.length;i++)
	{
		var c = ca[i];
		while (c.charAt(0)==' ') c = c.substring(1,c.length);
		if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
	}
	return null;
}
function setDivs (flag) {
/* if the erase flag set (only on index page) or there is no info stored about the site, hide all 
otherwise, set them to the remembered values */
	if ((flag =="erase") || (readCookie('amsvisit') != "true")) {  
	  		showDiv ('programs'); hideDiv ('artphot'); hideDiv ('film'); hideDiv ('compart'); hideDiv ('artvid'); hideDiv ('connections'); hideDiv ('compartcourses');  
	} else {
				var cookies = document.cookie.split("; ");
				for (var i=0; i < cookies.length; i++) {
					values = cookies[i].split("=");
					if (values[0] != "amsvisit") {
					  if (values[1] == "block") {
						  showDiv (values[0]);
						} else {
						  hideDiv (values[0]);
						}					  
					}
				}
  }
}