function check_voted() {
	// Have they voted on this page? If so, don't let
	// them vote again
	var url = document.location.href;
	cookie_name = "default_rp_" + cleanurl(url);
	if (document.cookie.indexOf(cookie_name) != -1) {
		var elt = document.getElementById("rateForm");
		if (elt) {
			elt.innerHTML = "You have already voted";
		}
	}
}


function cleanurl(url) {

	// Remove protocol and domain
	var start = new RegExp( "http(s)?://[^/]+" );
	url = url.replace( start, "" );
	
	// Remove other unwanted chars
	var unwanted = new RegExp( "[&\/\.\+%\?:=]+", "g" );
	url = url.replace( unwanted, "" );

	return url;
}