function openMelodyPreview(cat, id){
  url = '/preview_m.php?cat='+cat+'&pre='+id;
  params = 'width=450, height=500, left=0, top=0, menubar=no, status=no, location=no, toolbar=no, scrollbars=no, resizable=no';
  win = open( url, 'preview'+cat+id, params );
  win.focus();
  return false;
}
function openChangePhone(url){
	newwin = window.open('change.php?back_url=' + url, 'newwin','width=400,height=375, menubar=0, status=0, location=0, toolbar=0, scrollbars=0, resizable=0, directories=no');
	newwin.focus();
	return false;
}