function showhide(elementID)
{
	var theElement = document.getElementById(elementID);
	var elementStyle = theElement.style.display;
	//theElement.style.display = 'none';
	//alert('***'+theElement.style.display+'***');
	if(elementStyle == '' || elementStyle == 'none')
		theElement.style.display = 'block';
	else
		theElement.style.display = 'none';
}