function toggleDisplayRes(section) {
	var row = document.getElementById('block_' + section);
	var rootlevel = document.getElementById('level_' + section);
	//alert("hello");
	if(row.style.display == 'none') {
		row.style.display = 'inline';
		rootlevel.style.backgroundImage = 'url(images/homepage/minus.gif)';
		
	} else {
		row.style.display = 'none';
		rootlevel.style.backgroundImage = 'url(images/homepage/plus.gif)';
	}
}