$(document).ready(function(){
			$("a[rel^='prettyPopin']:eq(0)").prettyPopin({width: 640,followScroll:true});
			$("a[rel^='prettyPopin']:eq(1)").prettyPopin({width: 640,followScroll:true});
			$("a[rel^='prettyPopin']:eq(2)").prettyPopin({
				callback : function(){
					alert('This popin has a callback');
				}
			});
		});