var x, i, z;

////////////////// Jumpto menu show and hide script

function dropdown(element) {
	Effect.toggle(element, 'appear', {duration:0.5})
}


////////////////// Press release show and hide script

Effect.ShowAndHide = function(element, element2) {
  element = $(element);
  element2 = $(element2);
 
  if (Element.visible(element))  {		
  			new Effect.Parallel([ 
  			new Effect.BlindUp(element, {sync: true }), 
			new Effect.Appear(element2, {sync: true, to: 1.0 }) ]
		);  
		
		document.getElementById('showhide').innerHTML="Show Exhibition Press Release"
  }
  else {
  			new Effect.Parallel([ 
			new Effect.BlindDown(element, {sync: true }), 
			new Effect.Appear(element2, {sync: true, to: 0.0 }) ]
  		);
  		
  		document.getElementById('showhide').innerHTML="Show Exhibition Images"
  }
}


////////////////// Home page slideshow script

i=1;
function crossfade() {
		new Effect.Parallel([ 
			new Effect.Appear("imageslide_" + i, {sync: true}), 
			new Effect.Appear("textslide_" + i, {sync: true}),
			new Effect.Fade("imageslide_" + x, {sync: true}), 
			new Effect.Fade("textslide_" + x, {sync: true})
		], Object.extend({  duration: 5.0}));
		
	x=i;
	i=i+1;
	if (i>z){i=1}
	
}


function slideshow() {
		new Effect.Parallel([ 
				new Effect.Appear("imageslide_" + x, {sync: true}), 
					new Effect.Appear("textslide_" + x, {sync: true})
					], Object.extend({  duration: 2.0}));
		setInterval("crossfade()", 10000);
}


////////////////// Email Encryption

/***********************************************
* Encrypt Email script- Please keep notice intact
* Tool URL: http://www.dynamicdrive.com/emailriddler/
* Modified by Phil Peters for use on the AIG website
* **********************************************/

function aiglink() {
	var emailriddlerarray=[97,114,116,64,97,109,101,114,105,99,97,110,105,108,108,117,115,116,114,97,116,111,114,115,46,99,111,109]
	var encryptedemail_id72='' //variable to contain encrypted email 
	for (var i=0; i<emailriddlerarray.length; i++)
	 encryptedemail_id72+=String.fromCharCode(emailriddlerarray[i])
	
	document.write('<a href="mailto:'+encryptedemail_id72+'">'+encryptedemail_id72+'</a>')
}