$(function(){
	
	var previous_url = document.referrer;
	var previous_page = previous_url.slice(previous_url.lastIndexOf("group/") + 6, previous_url.length - 1);
	if (previous_page.indexOf("/") != -1) {
		previous_page = previous_page.slice(0, previous_page.indexOf("/"));
	}
	var previous_text = previous_page.replace("-", " ");
	
	var current_address = "/store/group/" + previous_page + "/";	
	$("[href='" + current_address + "']").addClass("selected-nav");
	
	if (previous_url.indexOf("/store/group/") != -1) {
		$("<a>").addClass("back-button").text("back to " + previous_text).attr("href", "").appendTo("#work-images-list").click(function(event){ 
			event.preventDefault();
			history.back();
		});
	}

});