function SendAMessage(id)
{
	var x=openWinCentered('popup.php?mode=new_g_message&id='+id,'videopopup',360,444,'');
}

function openWinCentered(loc, winname, widthh, heightt, params)
{
    tp = Math.ceil((screen.height-heightt)/2);
    lf = Math.ceil((screen.width-widthh)/2);
    if (params.length > 0)
	params = "," + params;

    var win=window.open(loc,winname,"width="+widthh+",height="+heightt+",top="+tp+",left="+lf+params);
    win.focus();
    return win;
}