function CmsCollapsiblePanel_Toggle(basePanelID,openImage,closedImage,autopostback)
{
	var headerPanelID = basePanelID + "_header";
	var headerImgID = basePanelID + "_header_img";
	var contentPanelID = basePanelID + "_content";
	var headerPanel = document.getElementById(headerPanelID);
	var contentPanel = document.getElementById(contentPanelID);
	var headerImg = document.getElementById(headerImgID);
	
	// load fallback images if none have been specified
	if ( openImage == undefined )
	{
		openImage = '/controls/images/CmsCollapsiblePanel/open.gif';
	}
	if ( closedImage == undefined )
	{
		closedImage = '/controls/images/CmsCollapsiblePanel/close.gif';
	}
	
	if ( contentPanel.style.display == 'none' )
	{
		contentPanel.style.display = 'block';
		if (closedImage == "")
		{
			headerImg.style.visibility = 'hidden';
		}
		headerImg.src = closedImage;
		headerPanel.className = headerPanel.className.replace(' panelCollapsed', '' );
	}
	else
	{
		contentPanel.style.display = 'none';
		if (openImage == "")
		{
			openImage.style.visibility = 'hidden'
		}
		headerImg.src = openImage;
		headerPanel.className += ' panelCollapsed';
	} 
}