function showHide(){
var form = document.getElementById('PlaylistSelect');
var grey = document.getElementById('SiteGrey');
if(form.style.display == 'block'){
form.style.display = 'none';
grey.style.display = 'none';
}
	else{
	form.style.display = 'block';
	grey.style.display = 'block';
	}
}

function add_track(track_id){
document.getElementById('track_id').value = track_id
showHide();

 if( document.getElementById( 'AddTrack' ).style.display  == 'none' ) 
 {
	 if(track_id == 'xxx')
	 {
	 }
	 else
	 {
 		document.getElementById( 'AddTrack' ).style.display  = 'block';
	 }
	 
 }
}

 function show_hide(id, target) {	
 detail = document.getElementById( 'detail_'+id );
 summary = document.getElementById( 'summary_'+id );

 if( detail.style.display  == 'none' ) {
 detail.style.display  = '';
 summary.style.display  = 'none';
 }
 else {
 detail.style.display  = 'none';
 summary.style.display  = ''
 }
 return false;
}