function switchElement (id,a_id,d) {
		
	var element=document.getElementById(id);
	var a_element=document.getElementById(a_id);

	if (element) {		
		if (d=="block") {
			if (element.style.display=="none"){
				element.style.display="block";
				//a_element.className="popuplink-on";
			}
			else {
				element.style.display="none";
				//a_element.className="popuplink-off";
			}
		}
		else if (d=="none") {
			if (element.style.display=="block"){
				element.style.display="none";
				//a_element.className="popuplink-on";
			}
			else {
				element.style.display="block";
				//a_element.className="popuplink-off";
			}
		}
	}
}