function switch_button_text(button_name) {
	switch (button_name) {
         	case 'voting':
                 	var text = "Best bewerteste Videos zuerst";
                 break;
                 case 'views':
                 	var text = "Am häufigst gesehene Videos zuerst";
                 break;
                 case 'date':
                 	var text = "Neuste Videos zuerst";
                 break;
         }

         document.getElementById('button_text').innerHTML = text;
}
function clear_button_text() {
	document.getElementById('button_text').innerHTML = "";
}

function openw (url) {
 fenster = window.open(url, "", "width=500,height=350,left=100,top=100,status=no,scrollbars=no,resizable=no");
 fenster.focus();
}

//Sterne onmouseover, -out
function SternOver (num,total)
{
	for (var x = 1; x <= num; x++)
	{
		document.getElementById('voting_' + x).src = 'img/stern_over.jpg';
	}
	for (var x = num + 1; x <= total; x++)
	{
                 document.getElementById('voting_' + x).src = 'img/stern_out.jpg';
	}
}

function SternOut (num,total)
{
	for (var x = 1; x <= num; x++)
	{
                 document.getElementById('voting_' + x).src = 'img/stern_out.jpg';
	}
	SternOver (num,total);
}