function braille() {
	b=document.getElementById('imgBraille').src;
	nr=parseInt(b.substring(b.length-4,b.length-5));
	nr=(nr==6)?1:nr+1;
	document.getElementById('imgBraille').src=(b.substring(b.length-5,0)+nr+'.gif');
}

function mo(nr,s){
	if (s==1) braille();
	switch (s) {
		case 0: { document.getElementById('i'+nr).style.borderColor='#ccc'; document.getElementById('i'+nr).style.background='#fff'; document.getElementById('i'+nr).style.color='#555'; break }
		case 1: { document.getElementById('i'+nr).style.borderColor='#aaa'; document.getElementById('i'+nr).style.background='#ddd'; document.getElementById('i'+nr).style.color='#222'; break }
		case 2: { document.getElementById('i'+nr).style.borderColor='#ccc'; document.getElementById('i'+nr).style.background='#eee'; document.getElementById('i'+nr).style.color='#555'; break }
	}
}

function hl(id){
	b=id.src;
	s=(b.substring(b.length-4,b.length-5)==0)?'1':'0';
	id.src=(b.substring(b.length-5,0)+s+'.gif');
}