function day(id_o) {
	document.getElementById(id_o).style.display = 'none';
	document.getElementById('night').style.display = 'none';
	
	return false;
}

function night2(id, id_o, id_offset, w) {
	document.getElementById('night').style.display = 'block';
	wOffset = document.getElementById(id).offsetWidth + 6;
	hOffset = document.getElementById(id).offsetHeight + 12;
	
	document.getElementById(id_o).style.display = 'block';
	h = document.getElementById(id_offset).clientHeight;
	document.getElementById(id_o).style.width = w + 'px';
	document.getElementById(id_o).style.height = h + 'px';
	
	return false;
}

function night(id, id_o, id_offset, w) {
	document.getElementById('night').style.display = 'block';
	wOffset = document.getElementById(id).offsetWidth + 6;
	hOffset = document.getElementById(id).offsetHeight + 12;
	
	document.getElementById(id_o).style.display = 'block';
	h = document.getElementById(id_offset).clientHeight;
	document.getElementById(id_o).style.width = w + 'px';
	document.getElementById(id_o).style.height = h + 'px';
	
	document.getElementById(id_o).style.display = 'none';
	
	document.getElementById(id_o).style.display = 'block';
	h = document.getElementById(id_offset).clientHeight;
	document.getElementById(id_o).style.width = w + 'px';
	document.getElementById(id_o).style.height = h + 'px';
	
	document.getElementById(id_o).style.marginLeft = '-' + (w - wOffset) + 'px';
	document.getElementById(id_o).style.marginTop = '-' + (h - hOffset) + 'px';
	
	return false;
}

function setNight() {
	document.getElementById('night').style.width = document.getElementById('global').offsetWidth + 'px';
	document.getElementById('night').style.height = document.getElementById('global').offsetHeight + 'px';
}

function imgs(img, page) {
	document.getElementById(o_img).style.display='none';
	document.getElementById(img).style.display='block';
	document.getElementById(o_page).className='work_img';
	document.getElementById(page).className='work_img_sel';
	o_page = page;
	o_img = img;
	return false;
}

function move_right() {
	for(i=0; i<img_array.length; i++) {
		if(img_array[i]==o_img && i==(img_array.length-1)) {
			return imgs(first_img, first_page);
		}
		if(img_array[i]==o_img) {
			return imgs(img_array[i+1], page_array[i+1]);
		}
	}
	return false;
}

function move_left() {
	for(i=0; i<img_array.length; i++) {
		if(img_array[i]==o_img && i==0) {
			return imgs(last_img, last_page);
		}
		if(img_array[i]==o_img) {
			return imgs(img_array[i-1], page_array[i-1]);
		}
	}
	return false;
}

function show(id) {
	document.getElementById(id).style.display='block';
	return false;
}

function hide(id) {
	document.getElementById(id).style.display='none';
	return false;
}