function set_content (id, content) {
  try {
  	var	elem = document.getElementById(id);
  	elem.innerHTML=content;
	} catch( e ) {
			alert('ERROR: Caught Exception: ' + e.description);
		};
};
function set_value (id, content) {
  try {
  	var	elem = document.getElementById(id);
  	elem.value=content;
	} catch( e ) {
			alert('ERROR: Caught Exception: ' + e.description);
		};
};
function set_selected(id,content) {
document.getElementById(id).selectedIndex=content
}