function toggleModule(id) {var header=document.getElementById(id);var content=document.getElementById(id+"Content");if (content.style.display!="none") {content.style.display="none";header.style.backgroundImage='url(http://www.freeple.com/images/plus.gif)';} else {content.style.display="inline";header.style.backgroundImage='url(http://www.freeple.com/images/minus.gif)';}}