function changelocation(locationid)
{
document.myform.song.length = 0;
var locationid=locationid;
var i;
for (i=0;i < onecount; i++)
{
if (subcat[i][1] == locationid)
{
document.myform.song.options[document.myform.song.length] = new Option(subcat[i][0],subcat[i][2]);
}
}