/**
 *	Opens the contact-form.
 */
function ShowContactForm()
{
	// ... done
	ShowPopup("/en/kontakt/formular.jsp","ContactForm",642,658,false,false);
}

/**
 *	Opens the image-popup.
 */
function ShowImage(sPath)
{
	// ... done
	ShowPopup("/en/image.jsp?sSource="+escape(sPath),"ImageDisplay",550,400,true,false);
}

/**
 *	Opens the specified url in a popup using the specified window-name, width, height and resizable-flag.
 */
function ShowPopup(sUrl,sName,iWidth,iHeight,bResizable,bScrollable)
{
	// Calculate coordinates
	var cx = iWidth;
	var cy = iHeight;
	var x  = ( screen.availWidth  - cx ) / 2;
	var y  = ( screen.availHeight - cy ) / 2;

	// Open window
	var wPopup = window.open(sUrl,sName,"width=" + cx + ",height=" + cy + ",screenX=" + x + ",screenY=" + y + ",top=" + y + ",left=" + x + ",toolbar=no,location=no,directories=no,status=no,menubar=no,resizable="+(bResizable==true?"yes":"no")+",dependent=no,scrollbars="+(bScrollable==true?"yes":"no")+"");

	// Focus window
	wPopup.focus();
}