//self.moveTo(0,0)
//self.resizeTo(750,580);

// for resyncing with window.opener (ie. the lesson index)
//   needed so that if access fails, It will not throw an error and stop trying
window.onerror = function(msg,url,line){
 window.setInterval('Resync();',500);
 return true;
};

var openerwnd = window.opener;

function Resync(){

     if (typeof(openerwnd.length)!='unknown')     {
          if (typeof(openerwnd.Resync)!='undefined') {
               openerwnd.Resync(window);
          }
     }
}


function openIndex() {

if(typeof(window.opener)=="object"){
 window.opener.lessonindex()
}
else{
 mainmd=window.open("../lessons-virtual-drum-school.php","mdmain","status=yes,menubar=yes,toolbar=yes,resizable=yes,scrollbars=yes,location=yes")

mainmd.focus()
}

self.close()
}

lsheading='<tr align="center" valign="baseline"><td colspan=3><TABLE BORDER=0 CELLSPACING=0 CELLPADDING=0 WIDTH="100%"><tr><td width=167 valign=middle><a href="javascript:openIndex(\'index.htm\');"><font style="font-size:12pt;color:#FFFF00;font-family:arial,helvetica,sans-serif"><B>&lt; Back to Index</B></font></a></td><td height="42" width=423 align=center><img src="image/lessons.gif" width="423" height="80"></td><td width=167></td></tr></TABLE></td></tr>'