function popup(url, name, w, h, attrs){
	var win = eval ("window.parent."+name);
	if (win == null) {
		var winl = (screen.width - w) / 2;
		var wint = (screen.height - h) / 2;
		var props = 'height='+h+',width='+w+',top='+wint+',left='+winl+(attrs ? ','+attrs:'') ;
		win = window.parent.open(url, name, props);
	} else {
		win.location = url;
	}
	win.focus();
	return false ;}
	
	function openSite(){
		popup('main.php','barth','640','720','menubar=no,toolbar=no,resizeable=no,scrollbars=no,locationbar=no,statusbar=no,personalbar=no');
	}

	function popImage(n){
		url = 'popimg.php?n='+n;
		popup(url,'barthpicts','50','50','menubar=no,toolbar=no,resizeable=no,scrollbars=no,locationbar=no,statusbar=no,personalbar=no');
	}

	function popCover(n){
		url = 'popcover.php?n='+n;
		popup(url,'barthcovers','50','50','menubar=no,toolbar=no,resizeable=no,scrollbars=no,locationbar=no,statusbar=no,personalbar=no');
	}

	function popSong(url){
		popup(url,'barthsongs','250','100','menubar=no,toolbar=no,resizeable=no,scrollbars=no,locationbar=no,statusbar=no,personalbar=no');
	}