GoToFrame

I need a way to let Javascript tell flash wich frame to go to. I'm using the GoToFrame() command as seen on Moock. Somehow this won't work. Can anyone help me out ? The script I'm using is shown below. Thanx !

var moviename = "Start";
var movie_ready = "false";

function movieobject(moviename)
{
if (navigator.appName.indexOf ("Microsoft") !=-1)
{
return window[moviename]
}

else
{
return document[moviename]
}
}

function gotoframe()
{
if(movie_ready == "false")
{
while(movie_ready == "false")
{
if(movieobject(moviename).PercentLoaded() == 100)
{
movieobject(moviename).GoToFrame(37);
movie_ready = "true";
}
}
}

else
{
movieobject(moviename).GoToFrame(37); }
}

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Shaman@Operamail.com