/*copyright egghead medien 2005 //// info[at]egghead.de */
function changeMenuState(id) {

	if (document.getElementById(id) == null) {
		collapseMenu();
		return;
	}

	if (document.getElementById(id).style.position == "static" &&
		document.getElementById(id).style.visibility == "visible") {
		document.getElementById(id).style.position = "absolute";
		document.getElementById(id).style.visibility = "hidden";
	} else if (document.getElementById(id).style.position == "absolute" &&
						 document.getElementById(id).style.visibility == "hidden") {
		collapseMenu();						 
		document.getElementById(id).style.position = "static";
		document.getElementById(id).style.visibility = "visible";									   
	}			
}


function collapseMenu() {
	var submenus = new Array();
	var tagId;

	submenus = document.getElementsByTagName("div");	
	
	for (var i=0; i < submenus.length; i++) {
		tagId = submenus[i].id;

		if ( tagId.search(/^sub/) == -1 ) continue;
	
		if (submenus[i].style.visibility == "visible") {
			submenus[i].style.visibility = "hidden";
			submenus[i].style.position = "absolute";					
		}	
	}

}

function expandMenu() {

}