function simple_reg(){
	var left_border = (document.body.clientWidth-300)/2;
	var top_border = (document.body.clientHeight-150)/2;
	window.open("simple_register.php","Register","height=150,width=300,toolbar=no,menubar=no,scrollbars=no,fullscreen=no,resizable=no,location=no,status=no,top="+top_border+",left="+left_border+",alwaysRaised=on");
}

function simple_reg_cn(){
	var left_border = (document.body.clientWidth-300)/2;
	var top_border = (document.body.clientHeight-150)/2;
	window.open("simple_register_cn.php","Register","height=150,width=300,toolbar=no,menubar=no,scrollbars=no,fullscreen=no,resizable=no,location=no,status=no,top="+top_border+",left="+left_border+",alwaysRaised=on");
}