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

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

function showGreek() {
	hide('english_message');
	hide('view_page_handwrite_img');
	show('greek_message');
	return false;
}

function showEnglish() {
	show('english_message');
	show('view_page_handwrite_img');
	hide('greek_message');
	return false;
}

function popIm(id) {
	var elem = document.getElementById('popup_poster');
	if (elem.style.display=='block') return false;
	elem.removeChild(elem.firstChild);
	
	var srcimg = document.getElementById(id);
	var img = new Image();
	img.src = srcimg.src;
	img.onclick= function() {elem.style.display='none';};
	
	elem.appendChild(img);
	elem.style.height = img.height + 'px';
	elem.style.width = img.width + 'px';
	elem.style.display = 'block';
	return false;
}