function showHide(showElement, hideElement){
	if(obj = document.getElementById(showElement)){
		obj.style.display = '';
		obj.style.height = 'auto';
	}
	if(obj = document.getElementById(hideElement)){	
		obj.style.display = 'none';
		obj.style.height = '0px';
	}
}
function doNothing(){
	// do nothing...
}