function toggleTag(id) {
	var e = document.getElementById(id);
	var eimg = document.getElementById(id+"trigger");
	if(e.style.display == 'block') {
		eimg.src = "images/hoverblockimg.gif";	
		e.style.display = 'none';
	}
	else {
		eimg.src = "images/hoverblockimg_on.gif";	
		e.style.display = 'block';
	}
}