function hideDiv() { 
	if (document.getElementById) { // DOM3 = IE5, NS6 
		document.getElementById('popup_image').src = '';
		document.getElementById('hideshow').style.visibility = 'hidden'; 
	} 
	else { 
		if (document.layers) { // Netscape 4 
			document.popup_image.src = '';
			document.hideshow.visibility = 'hidden'; 
		} 
		else { // IE 4 
			document.all.popup_image.src = '';
			document.all.hideshow.style.visibility = 'hidden'; 
		} 
	} 
}

function showDiv(imgsrc) { 
	if (document.getElementById) { // DOM3 = IE5, NS6 
		document.getElementById('popup_image').src = imgsrc;
		document.getElementById('hideshow').style.visibility = 'visible'; 
	} 
	else { 
		if (document.layers) { // Netscape 4 
			document.popup_image.src = imgsrc;
			document.hideshow.visibility = 'visible'; 
		} 
		else { // IE 4 
			document.all.popup_image.src = imgsrc;
			document.all.hideshow.style.visibility = 'visible'; 
		} 
	} 
}