var page = new Array(1,1,1,1,1);

function b_style(x,c) {

	var j = 1;
	var butt = new Array(5);
	var lay = new Array(5);

	for (var i=0; i<5; i++) {
		butt[i] = '';
		lay[i] = 'none';
	}
	butt[(x-1)] = 'on';
	lay[(x-1)] = 'block';

	for (var i=1; i<(c+1); i++) {
		if (i==2) j=2;
		if (i==c) j=3;
		document.getElementById('b'+i).className = 'butt b'+j+''+butt[i-1];
		document.getElementById('m'+i).style.display = lay[i-1];
	}

}

function nav(l,x,y) {
	count = page[l-1]+x;

	if (count==0) {
		type = l+'.'+y;
		selpage(l,type,y);
	} else if (count==(y+1)) {
		type = l+".1";
		selpage(l,type,y);
	} else {
		type = l+'.'+count;
		selpage(l,type,y);
	}
	
}

function selpage(l,x,c) {
	y = x.substr(2);
	
	page[l-1] = parseInt(y);
	
	for (var i=1; i<(c+1); i++) {
		document.getElementById('p'+l+'.'+i).className = 'pages page';
		document.getElementById('m'+l+'.'+i).style.display = 'none';
	}
	
	var na = document.getElementById('p'+x);
	var lma = document.getElementById('m'+x);
	
	na.className = 'pages pageon';
	lma.style.display = 'block';
	
}