$(document).ready(function() { 
	var re = new RegExp("banner-([0-9]+)"); 
	$('img.banner-image').each(function() {
		var classes = $(this).attr("class");
		var banner_id = re.exec(classes)[1];
		$.post('/track/', { category: "banners", action: "impression", value: banner_id } );
	}).click(function(){
		var classes = $(this).attr("class");
		var banner_id = re.exec(classes)[1];
		$.post('/track/', {category: "banners", action: "click", value: banner_id } );	
	});
});