var popup_window = null;
function popupwin(status,url,size) {
	if(status == 1) {
		if(popup == null){
			var popup = window.open(url, "cart", size);
			popup_window = popup;
			popup.focus();
		}else{
			popup.focus();
		}
	} else {
		//if(popup_window != null) popup_window.close();
		popup_window.close();
	}
}