var slide1;
var slide2;
var slide3;

window.addEvent('domready', function(){
//	alert("domready");

	//setUpContributionTopModule()
	
	//create new slide object
	slide1 = new Fx.Slide($('sub_menu_about'));
	slide2 = new Fx.Slide($('sub_menu_science'));
	slide3 = new Fx.Slide($('sub_menu_targets'));
	//hide contribution info intially
	if(!isAboutPage) {
		slide1.hide();		
	}
	if(!isSciencePage) {
		slide2.hide();
	}
	if(!isTargetsPage) {
		slide3.hide();
	}

	//add toggle function to minimize button
	$('nav_about').addEvent('click', function(event) {
		event.preventDefault();
		slide1.toggle();
	});
	$('nav_science').addEvent('click', function(event) {
		event.preventDefault();
		slide2.toggle();
	});
	$('nav_targets').addEvent('click', function(event) {
		event.preventDefault();
		slide3.toggle();
	});
	
});