function flash_popup(content){

	//Center it:
	var iMyWidth;
	var iMyHeight;
	//Half the screen width minus half the new window width.
	iMyWidth = (window.screen.width/2) - (450);
	//Half the screen height minus half the new window height.
	iMyHeight = (window.screen.height/2) - (300);

	window.open(content,'NIDA_Brain_Games','top='+iMyHeight+',left='+iMyWidth+',width=902,height=640,menubar=0,toolbar=0,scrollbars=1,status=0,location=0,resizable=1,directories=0');

}