onload = function() { 
 	/*stripe ('playlist')*/
	zebraStripes ('zebratable');
	};


function zebraStripes(classe) {
	var tabelle = document.getElementsByTagName("table");
	for (var i=0; i<tabelle.length; i++) {
		/*if (tabelle[i].className == classe) {*/
		if (1 + tabelle[i].className.indexOf(classe)) {
			var righe = tabelle[i].getElementsByTagName("tr");
			for (var j = 0; j < righe.length; j += 2) {
				righe[j].className += " even";
			}
		}
	}
}