var Util = {
		string_to_slug : function (str) {
			str = str.replace(/^\s+|\s+$/g, ''); // trim
			str = str.toLowerCase();
		
			// remove accents, swap ñ for n, etc
			var from = "àáäâèéëêìíïîòóöôùúüûñç·/_,:;";
			var to = "aaaaeeeeiiiioooouuuunc------";
			for ( var i = 0, l = from.length; i < l; i++) {
				str = str.replace(from[i], to[i]);
			}
		
			str = str.replace(/[^a-z0-9 -]/g, '') // remove invalid chars
					.replace(/\s+/g, '-') // collapse whitespace and replace by -
					.replace(/-+/g, '-'); // collapse dashes
		
			return str;
		}
};