function popup(href, w, h, r, s) {
	win=window.open(href,'send','width='+w+', height='+h+', scrollbars='+s+', location=no, menubar=0, status=0, toolbar=0, addressbar=0, directory=0, status=0, copyhistory=0, resizable='+r);
	win.moveTo(screen.width/2-(w/2),screen.height/2-(h/2));
	win.focus();
}