function openEdit(post_id)
{
	var window_width = 530;
	var window_height = 440;
	window_posx = (screen.availWidth - window_width) / 2; 
	window_posy = (screen.availHeight - window_height) / 2;

	window.open("edit.php?post="+post_id, "Edit", "screenX="+window_posx+",left="+window_posx+",screenY="+window_posy+",top="+window_posy+", width="+window_width+",height="+window_height+",scrollbars=0");
}