function openWin(html,name,w,h,features) {
	top.location.href='thanks.html';
	x = (screen.availWidth - w) / 2
	y = (screen.availHeight - h - 100) / 2 
	win = window.open(html,name,'width='+w+',height='+h+','+features)
	if(InternetExplorer) {
		win.moveTo(x,y)
	}
	win.focus()
}

function openBase() {
	openWin('base.html','dd_window',750,410,'menubar=no,toolbar=no,status=yes,scrollbars=no,resizable=no');
}