window.addEvent('domready', function(){

	var element = $('flash_object');
	var element_adv = $('flash_avertissement');
	
	if (navigator.plugins && navigator.plugins.length){
		
		x = navigator.plugins["Shockwave Flash"];
		
		if (x){
			element_adv.setStyle('display', 'none');
		}else{
			element.setStyle('display', 'none');
		}
	}
});