function get_Browser(id){
if (document.getElementById) return document.getElementById(id);
else if (document.all) return document.all[id];
else if (document.layers) return document[id];
}
function tag(id) {
	fobj = get_Browser(id);
	disp = fobj.style.display;
	if(disp == 'block'){
	  fobj.style.display = 'none';
	} else {
	  fobj.style.display = 'block';
	}
}