// Opens a new window
function popup(url) {
	popup(url, 'popup', 380, 220);
}

// Opens a new window of the specified dimensions.
function popup(url, width, height) {
	popup(url, 'popup', width, height);
}

// Opens a new window of the specified dimensions.
function popup(url, name, width, height) {
	window.open(url, name, 'toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=yes,resizable=yes,copyhistory=no,width='+width+',height='+height);
}