var sharewindow;
function openShareFenster(lang) {
	var w = 400;
	var h = 250;
	var x = (screen.availWidth - w) / 2;
	var y = (screen.availHeight - h) / 2;
	if (sharewindow != null) {
		sharewindow.close();
	}
	params = '?l='+lang.toLowerCase();
	rand = parseInt(Math.random() * 1000000);
	params += '&r='+rand;
	sharewindow = window.open('/SHARED/share/'+params,'sharewindow','top='+y+',left='+x+',width='+w+',height='+h+',location=0,menubar=0,status=0,resizable=0,toolbar=0,scrollbars=0');
}