function toggleId(id, img) {
	div=document.getElementById(id);
	if(div){
		div.style.display = (div.style.display == 'block' || div.style.display == '') ? 'none' : 'block';
		img.src = (div.style.display == 'none') ? img.src.replace('button_hide.png','button_show.png') : img.src.replace('button_show.png','button_hide.png');
	}

}