function popup(page, name, w, h)
	{
		var _loc = page
		var _name=name
		var scroll='no';
		var winl = (screen.width - w) / 2;
		var wint = (screen.height - h) / 2;
		var winprops = 'width=' + w + ',height=' + h +',top='+wint+',left='+winl+',scrollbars='+scroll+',resizable';
		var _replace=true;
		window.open(_loc,_name,winprops);
	}