if (document.images) {
	var navb1 = new Image();
	navb1.src = "/common/navigation/header/images/rev3flash/but_onexhibit_off.gif";
	var navb1on = new Image();
	navb1on.src = "/common/navigation/header/images/rev3flash/but_onexhibit_on.gif";	

	var navb2 = new Image();
	navb2.src = "/common/navigation/header/images/rev3flash/but_pubprograms_off.gif";
	var navb2on = new Image();
	navb2on.src = "/common/navigation/header/images/rev3flash/but_pubprograms_on.gif";

	var navb3 = new Image();
	navb3.src = "/common/navigation/header/images/rev3flash/but_planvisit_off.gif";
	var navb3on = new Image();
	navb3on.src = "/common/navigation/header/images/rev3flash/but_planvisit_on.gif";

	var navb4 = new Image();
	navb4.src = "/common/navigation/header/images/rev3flash/but_science_off.gif";
	var navb4on = new Image();
	navb4on.src = "/common/navigation/header/images/rev3flash/but_science_on.gif";

	var navb5 = new Image();
	navb5.src = "/common/navigation/header/images/rev3flash/but_support_off.gif";
	var navb5on = new Image();
	navb5on.src = "/common/navigation/header/images/rev3flash/but_support_on.gif";

	var navb6 = new Image();
	navb6.src = "/common/navigation/header/images/rev3flash/but_kids_off.gif";
	var navb6on = new Image();
	navb6on.src = "/common/navigation/header/images/rev3flash/but_kids_on.gif";

	var navb7 = new Image();
	navb7.src = "/common/navigation/header/images/rev3flash/but_tickets_off.gif";
	var navb7on = new Image();
	navb7on.src = "/common/navigation/header/images/rev3flash/but_tickets_on.gif";

	var navb8 = new Image();
	navb8.src = "/common/navigation/header/images/rev3flash/but_shop_off.gif";
	var navb8on = new Image();
	navb8on.src = "/common/navigation/header/images/rev3flash/but_shop_on.gif";
	
	var enotes = new Image();
	enotes.src = "/home/images/rev3/but_enotes_off.gif";
	var enoteson = new Image();
	enoteson.src = "/home/images/rev3/but_enotes_on.gif";
	
	var visitor = new Image();
	visitor.src = "/home/images/rev3/but_visitorinfo_off.gif";
	var visitoron = new Image();
	visitoron.src = "/home/images/rev3/but_visitorinfo_on.gif";

}	
function imgon(name)  {
 if (document.images){
	document[name].src = eval(name + "on.src");}
}
function imgoff(name)  {
 if (document.images){
	document[name].src = eval(name + ".src");}
} 	

// submit button rollover script 
// copyright 1999-2001 Idocs, Inc. http://www.idocs.com/tags/
// Distribute this script freely, but keep this 
// notice with the code.
var submitRolls = new Object();
function submitroll(src, oversrc, name)
{
this.src=src;
this.oversrc=oversrc;
this.name=name;
this.alt="Search";
this.write=submitroll_write;
}
function submitroll_write()
{
var thisform = 'document.forms[' + (document.forms.length - 1) + ']';
submitRolls[this.name] = new Object();
submitRolls[this.name].over = new Image();
submitRolls[this.name].over.src = this.oversrc;
submitRolls[this.name].out = new Image();
submitRolls[this.name].out.src = this.src;
document.write
(
'<a onMouseOver="if (document.images)document.images[\'' + this.name + "'].src=submitRolls['" + this.name + '\'].over.src"' + 
' onMouseOut="if (document.images)document.images[\'' + this.name + "'].src=submitRolls['" + this.name + '\'].out.src"' + 
' href="javascript:'
);
if (this.sendfield)
{
if (! this.sendvalue)
this.sendvalue = 1;
document.write(thisform, ".elements['", this.sendfield, "'].value='", this.sendvalue, "';");
}
document.write(thisform + '.submit();void(0);"');
if (this.msg)document.write(' onClick="return confirm(\'' , this.msg, '\')"');
document.write('>');
document.write('<img src="' + this.src + '" alt="' + this.alt + '" border=0 name="' + this.name + '"');
if (this.height)document.write(' height=' + this.height);
if (this.width)document.write(' width='  + this.width);
if (this.otheratts)document.write(' ' + this.otheratts);
document.write('></a>');
if (this.sendfield)
{
document.write('<input type=hidden name="' + this.sendfield + '">');
document.forms[document.forms.length - 1].elements[this.sendfield].value='';
}
}

//enotes popup script
function enotes_popup(){
var url ="http://ga1.org/amnh/join.tcl";
window.open(url,"enotes","resizable=0,width=790,height=600,scrollbars=1");
}

function enotes_download_popup(){
var url ="http://www.prq0.com/quickstart/survey.asp?e=XbcahfjgDA-RaA&oid=UdcacH";
window.open(url,"enotes","resizable=0,width=500,height=600,scrollbars=1");
}

//setting variables for send to a friend
var here = (document.location.href);
var hereArray = here;
var hereArray = here.split("?src=");
hereArray.reverse();
var sendme = hereArray[0];

function send2friend(){
var here = (document.location.href);
var url ="/common/send2friend/index.php?referer=" + here;
window.open(url,"send2friend","resizable=1,width=425,height=600,scrollbars=1");
}