var div = 0;

function highlight(divId){
	if (divId != div){
		document.getElementById(divId).className='hover';
	}
}

function onclick_highlight(divId){
	var child = document.getElementById(divId);
	var parent = child.parentNode.parentNode;
	var num_child = parent.getElementsByTagName('div').length;
	var loop = 0;
	var div_child = parent.firstChild;
	while (loop < num_child){
		var image = document.getElementById(loop);
		image.className='hover';
		imageParent = image.parentNode;
		imageParent.className = 'image-content';
		loop++;
	}
	child.className='hover2';
	parent = child.parentNode;
	parent.className='image-content-green';
	div = divId;
}