open_popup = function() {
	
	popup_window = $('competition_pop_up');	
	
	if (!popup_window) {
		return false;
	}
	
	close_button = $('close_competition_window');
	
	
	if (close_button) {
		Event.observe(close_button, "click", close_popup, false);	
	}
	else {
		return false;
	}	
	
	if (popup_window) {
		popup_window.style.display = 'block';
	}
	else {
		return false
	}
	
}

close_popup = function() {

popup_window = $('competition_pop_up');

	if (popup_window) {
		popup_window.style.display = 'none';
	}
	else {
		return false;
	}

}

Event.observe(window, "load", open_popup, false);