function hideDiv( divId ) { 
	var div = document.getElementById( divId ); 
	
	/*alert('div.id is ' + div.id);*/
	
	if( div.style.display == 'none' ){
		div.style.display = '';
		if( div.id == 'aboutmusic' ){
			document.getElementById( 'musicarrow' ).src = 'images/leftarrow_black_sm.png';
		}
		if( div.id == 'aboutme' ){
			document.getElementById( 'mearrow' ).src = 'images/leftarrow_black_sm.png';
		}
		if( div.id == 'track1' ){
			document.getElementById( 't1a' ).src = 'images/leftarrow_black_smm.png';
		}
		if( div.id == 'track2' ){
			document.getElementById( 't2a' ).src = 'images/leftarrow_black_smm.png';
		}
		if( div.id == 'track3' ){
			document.getElementById( 't3a' ).src = 'images/leftarrow_black_smm.png';
		}
		if( div.id == 'track4' ){
			document.getElementById( 't4a' ).src = 'images/leftarrow_black_smm.png';
		}
		if( div.id == 'track5' ){
			document.getElementById( 't5a' ).src = 'images/leftarrow_black_smm.png';
		}
		if( div.id == 'track6' ){
			document.getElementById( 't6a' ).src = 'images/leftarrow_black_smm.png';
		}
		if( div.id == 'track7' ){
			document.getElementById( 't7a' ).src = 'images/leftarrow_black_smm.png';
		}
		if( div.id == 'track8' ){
			document.getElementById( 't8a' ).src = 'images/leftarrow_black_smm.png';
		}
		if( div.id == 'track9' ){
			document.getElementById( 't9a' ).src = 'images/leftarrow_black_smm.png';
		}
	} else {
		div.style.display = 'none';
		if( div.id == 'aboutmusic' ){
			document.getElementById( 'musicarrow' ).src = 'images/leftarrow_white_sm.png';
		}
		if( div.id == 'aboutme' ){
			document.getElementById( 'mearrow' ).src = 'images/leftarrow_white_sm.png';
		}
		if( div.id == 'track1' ){
			document.getElementById( 't1a' ).src = 'images/leftarrow_white_smm.png';
		}
		if( div.id == 'track2' ){
			document.getElementById( 't2a' ).src = 'images/leftarrow_white_smm.png';
		}
		if( div.id == 'track3' ){
			document.getElementById( 't3a' ).src = 'images/leftarrow_white_smm.png';
		}
		if( div.id == 'track4' ){
			document.getElementById( 't4a' ).src = 'images/leftarrow_white_smm.png';
		}
		if( div.id == 'track5' ){
			document.getElementById( 't5a' ).src = 'images/leftarrow_white_smm.png';
		}
		if( div.id == 'track6' ){
			document.getElementById( 't6a' ).src = 'images/leftarrow_white_smm.png';
		}
		if( div.id == 'track7' ){
			document.getElementById( 't7a' ).src = 'images/leftarrow_white_smm.png';
		}
		if( div.id == 'track8' ){
			document.getElementById( 't8a' ).src = 'images/leftarrow_white_smm.png';
		}
		if( div.id == 'track9' ){
			document.getElementById( 't9a' ).src = 'images/leftarrow_white_smm.png';
		}
	}
}

function changePic(num){
	document.getElementById( 'mainpic' ).src = 'images/' + num + '.jpg';
}