function displayBackground (status) {
	if(status){
		
		$('<div id="container_background"><a href="javascript:displayBackground(false);" alt="VOLTE AQUI" title="VOLTE AQUI">voltar</a></div>').insertAfter($('#container'));
		$('#container').hide();
		$('#backgrounds img').css('position','absolute');
		
			$('html,body').animate({
				scrollTop:  screen.availHeight
			}, 5600);
		
		
		
		
	}else if(!status){
		
		$('#container_background').remove();
		$('#container').show();
		$('#backgrounds img').css('position','fixed');
		$('html,body').animate({
				scrollTop:  0
		}, 500);
	}
	
}