// JavaScript Document
var cur_la=1;
function la(direction,max_pages){
	if(direction=='left'){
		if(cur_la>1) {
			document.getElementById('la'+cur_la).style.display = 'none';
			cur_la--;
			document.getElementById('la'+cur_la).style.display = 'block';
		}
	}else if(direction=='right'){
		if(cur_la<max_pages) {
			document.getElementById('la'+cur_la).style.display = 'none';
			cur_la++;
			document.getElementById('la'+cur_la).style.display = 'block';
		}
	}
}
var cur_lb=1;
function lb(direction,max_pages){
	if(direction=='left'){
		if(cur_lb>1) {
			document.getElementById('lb'+cur_lb).style.display = 'none';
			cur_lb--;
			document.getElementById('lb'+cur_lb).style.display = 'block';
		}
	}else if(direction=='right'){
		if(cur_lb<max_pages) {
			document.getElementById('lb'+cur_lb).style.display = 'none';
			cur_lb++;
			document.getElementById('lb'+cur_lb).style.display = 'block';
		}
	}
}
var cur_ll=1;
function ll(direction,max_pages){
	if(direction=='left'){
		if(cur_ll>1) {
			document.getElementById('ll'+cur_ll).style.display = 'none';
			cur_ll--;
			document.getElementById('ll'+cur_ll).style.display = 'block';
		}
	}else if(direction=='right'){
		if(cur_ll<max_pages) {
			document.getElementById('ll'+cur_ll).style.display = 'none';
			cur_ll++;
			document.getElementById('ll'+cur_ll).style.display = 'block';
		}
	}
}

var cur_lh=1;
function lh(direction,max_pages){
	if(direction=='left'){
		if(cur_lh>1) {
			document.getElementById('lh'+cur_ll).style.display = 'none';
			cur_lh--;
			document.getElementById('lh'+cur_ll).style.display = 'block';
		}
	}else if(direction=='right'){
		if(cur_lh<max_pages) {
			document.getElementById('lh'+cur_ll).style.display = 'none';
			cur_lh++;
			document.getElementById('lh'+cur_ll).style.display = 'block';
		}
	}
}