var preloadFlag = false;
function preloadImages() {
	if(document.images) {
		pre_home = newImage('images/btn_home.jpg');
		pre_home_down = newImage('images/btn_dn_home.jpg');
		pre_about = newImage('images/btn_about.jpg');
		pre_about_down = newImage('images/btn_dn_about.jpg');
		pre_contact = newImage('images/btn_contact.jpg');
		pre_contact_down = newImage('images/btn_dn_contact.jpg');
		pre_calendar = newImage('images/btn_calendar.jpg');
		pre_calendar_down = newImage('images/btn_dn_calendar.jpg');
		pre_features = newImage('images/btn_features.jpg');
		pre_features_down = newImage('images/btn_dn_features.jpg');
		pre_fun = newImage('images/btn_fun.jpg');
		pre_fun_down = newImage('images/btn_dn_fun.jpg');
		pre_expo = newImage('images/btn_expo.jpg');
		pre_expo_down = newImage('images/btn_dn_expo.jpg');
		pre_links = newImage('images/btn_links.jpg');
		pre_links_down = newImage('images/btn_dn_links.jpg');
		pre_members_over = newImage('images/navbuttons/members-over.gif');
		pre_members_down = newImage('images/navbuttons/members-down.gif');
		preloadFlag = true;
	}
}

function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}
userAgent = window.navigator.userAgent;
browserVers = parseInt(userAgent.charAt(userAgent.indexOf("/")+1),10);
mustInitImg = true;
function initImgID() {var di = document.images; if (mustInitImg && di) { for (var i=0; i<di.length; i++) { if (!di[i].id) di[i].id=di[i].name; } mustInitImg = false;}}
function findElement(n,ly) {
	var d = document;
	if (browserVers < 4)		return d[n];
	if ((browserVers >= 6) && (d.getElementById)) {initImgID; return(d.getElementById(n))}; 
	var cd = ly ? ly.document : d;
	var elem = cd[n];
	if (!elem) {
		for (var i=0;i<cd.layers.length;i++) {
			elem = findElement(n,cd.layers[i]);
			if (elem) return elem;
		}
	}
	return elem;
}
function changeImagesArray(array) {
	if (preloadFlag == true) {
		var d = document; var img;
		for (i=0;i<array.length;i+=2) {
			img = null; var n = array[i];
			if (d.images) {
				if (d.layers) {img = findElement(n,0);}
				else {img = d.images[n];}
			}
			if (!img && d.getElementById) {img = d.getElementById(n);}
			if (!img && d.getElementsByName) {
				var elms = d.getElementsByName(n);
				if (elms) {
					for (j=0;j<elms.length;j++) {
						if (elms[j].src) {img = elms[j]; break;}
					}
				}
			}
			if (img) {img.src = array[i+1];}
		}
	}
}
function changeImages() {
	changeImagesArray(changeImages.arguments);
}
function toggleImages() {
	for (var i=0; i<toggleImages.arguments.length; i+=2) {
		if (selected == toggleImages.arguments[i])
			changeImagesArray(toggleImages.arguments[i+1]);
	}
}

function openWindow(pic_url) {
    myWindow = window.open("", "aWindow", "titlebar,width=850,height=750")
    myWindow.document.write("<HTML><HEAD><TITLE>Pictures</TITLE></HEAD><BODY><DIV ALIGN='CENTER'>")
    myWindow.document.write("<IMG SRC='" + pic_url + "' BORDER='0'>")
    myWindow.document.write("<FORM NAME='aform' TARGET='aWindow'>")
    myWindow.document.write("<INPUT TYPE='BUTTON' NAME='aButton' VALUE='Close Window' ONCLICK=self.close()>")
    myWindow.document.write("</FORM>")
    myWindow.document.write("</DIV></BODY></HTML>")
}

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();
}

