var counter = 0;

jQuery(document).ready(function() {	
		jQuery('#calendar').mousedown(function() {
			
			if (counter == 0) {
				
				
    			jQuery('iframe').css({'visibility' : 'visible'});
				jQuery('#slideshow img').css({'visibility' : 'hidden'});
				counter = 1;
				
			}
			else if (counter == 1) {

				
				jQuery('iframe').css({'visibility' : 'hidden'});
				jQuery('#slideshow .active').css({'visibility' : 'visible'});
				counter = 0;
			}
			return false;
		}).click(function(e) {
			return false;	
		});	
								});