function newwin(wx, wy, url, id) {
	x = (screen.width  - wx) / 2;
	y = (screen.height - wy) / 2;
	window.open(url,id,"toolbar=0,menubar=0,scrollbars=0,resizable=0,left="+x+",top="+y+",width="+wx+",height="+wy);
};
function newwin2(wx, wy, url, id) {
	x = (screen.width  - wx) / 2;
	y = (screen.height - wy) / 2;
	window.open(url,id,"toolbar=0,menubar=0,scrollbars=1,resizable=1,left="+x+",top="+y+",width="+wx+",height="+wy);
};