// this function is used by the gallery and attachment
// images to show a inwindow popup div of the 
// larger image

function popupDiv(display,source,height,width) {

	if (document.images) {
		var popImage = new Image();
		popImage.src = source;
	}

	var popupDiv = document.getElementById('popupDiv');
	popupDiv.innerHTML = '';

	if (display == 'show' && (popupDiv.style.display = 'none')) {
			popupDiv.style.display = 'block';
			popupDiv.style.height = ''+height+'px';
			popupDiv.style.width = ''+width+'px';
			popupDiv.innerHTML = '<a href="javascript:popupDiv(\'hide\',\'NULL\',\'NULL\',\'NULL\')"><img id="popupimage" src="'+source+'" alt="" /></a>';
	}


	if (display == 'hide' && (popupDiv.style.display = 'block')) {
			popupDiv.innerHTML = '';
			popupDiv.style.display = 'none';
	}
}