$('.event_block a.event_link').click(function() {
	var thisId = $(this).attr('id').substr(5);
	var infoDiv = thisId+"_info";
	var thisArrow = "arrow_"+thisId;
	$('#'+infoDiv).toggle();
	// $("#myImage").attr("src", "path/to/newImage.jpg");
	//alert($('#'+thisArrow).attr("src"));
	// alert($('#'+thisArrow).attr("src").indexOf("down"));
	var currentArrow = $('#'+thisArrow).attr("src");
	var thisLi = $('#'+thisId);
	if(currentArrow.indexOf("down") !== -1) {
		var newArrow = currentArrow.replace("down", "up");
		$(thisLi).attr("title", "Click to hide details");
	} else {
		var newArrow = currentArrow.replace("up", "down");
		$(thisLi).attr("title", "Click to show details");
	}
	$('#'+thisArrow).attr("src", newArrow);
});