function popup(name, url, left, top, width, height, toolbar, menubar, statusbar, scrollbar, resizable){
																	var wint = (screen.height - height) / 2;
																	var winl = (screen.width - width) / 2;
																	toolbar_str = toolbar ? 'yes' : 'no';
																	menubar_str = menubar ? 'yes' : 'no';
																	statusbar_str = statusbar ? 'yes' : 'no';
																	scrollbar_str = scrollbar ? 'yes' : 'no';
																	resizable_str = resizable ? 'yes' :'no';
																	window.open(url, name, 'left='+winl+',top='+wint+',width='+width+',height='+height+',toolbar='+toolbar_str+',resizable='+resizable_str);
																}