$(document).ready(function(){

	$(".article img").each(function(){
		this.img = $(this);
		
		var alt = this.img.attr("alt");
		var css = (this.img.width() <= 150) ? "smallImage" : "bigImage";
		
		this.img.wrap('<div class="articleImage ' + css + '"></div>');
		this.img.after('<em>' + alt + '</em>');
		this.img.attr('title', alt);
	});

});