function read_more(lim){
	$$('div.articleDescription').each(function(s){
		var tread_more = "<small class='read_more' style='text-decoration:underline; font-size:9px; color:#E1031D; cursor:pointer;'>En savoir plus</small>";
		
		var height =  s.getDimensions().height;
		
		if (lim == "" || lim == undefined) lim = 43;
		
		if(height > lim){
			s.setStyle({height : lim+'px', overflow :'hidden'});
			s.insert({'after' : tread_more});
		
		}		
	});
	
	$$('small.read_more').each(function(e){
		e.observe('click', function(){
			e.previous(0).setStyle({height:'auto', overflow:'visible'});
			e.remove();
		});
	});
}

document.observe("dom:loaded", function() {
	read_more();
});