function f_password()
{
	var win_w = 400;
	var win_h = 300;
	var myScreenW = screen.width;
	var myScreenH = screen.height;
	
	leftPos = (myScreenW - win_w)/2;
	topPos  = (myScreenH - win_h)/2;
	
	window.open('/f_password.php', null, "width=" + win_w + ", height=" + win_h + ", toolbar=no, status=no, menubar=no, scrollbars=1, resizable=no, top=" + topPos + ", left=" + leftPos + "");
}