function displayDescription(sId) {

	var oDescription = document.getElementById(sId);		
	
	if(oDescription) {
		
		if(cmnMatch_class(oDescription, 'opened')) {		
			cmnRemove_class(oDescription, 'opened');					
		}
		else {
			cmnSet_class(oDescription, 'opened');	
		}			
		
	}	
	
	return false;

}