function setEqualHeight(columns) {
    var tallestcolumn = 0;
    columns.each(function(){
    	currentHeight = $(this).height();
    	if (currentHeight > tallestcolumn) {tallestcolumn = currentHeight;}
    	});
    columns.height(tallestcolumn);
}

$(document).ready(
//$(window).load(
function(){
	setEqualHeight($("#content, #sidebar"));
	
	$("span.attribution").hover(function () {
	        $(this).stop().css({
	            backgroundColor: "#000000",
	            opacity: 0.75
	        }).animate({
	            width: 634
	        }, 500).find("span").fadeIn(300);
	    }, function () {
	        $(this).stop().css({
	            backgroundColor: "transparent",
	            opacity: 1
	        }).animate({
	            width: 15
	        }, 2000).find("span").hide();
	    });
});