//checkFrameset();

var  prefix = new Array ("a","k","p","i","d","dl");



function alleWeg() {
  bilderWeg();
	menuWeg();
	submenuWeg();
}
function bilderWeg() {
  for (var i in prefix) {
	document.getElementById(prefix[i]).style.visibility="hidden";
  }
}
function menuWeg() {
  for (var i=1;i<prefix.length;i++) {
	document.getElementById(prefix[i]+"_menu").style.visibility="hidden";
  }
}
function submenuWeg() {
	var subm = document.getElementById("sub");
	 
  for (var i=0;i<subm.getElementsByTagName("div").length;i++) {
	  subm.getElementsByTagName("div")[i].style.visibility="hidden";
  }
}

function bildZeige(welches) {
  bilderWeg();
	document.getElementById(welches).style.visibility="visible";
}
function menuZeige(welches) {
  alleWeg();
	bildZeige(welches);
	document.getElementById(welches+"_menu").style.visibility="visible";
}
function submenuZeige(welches) {
  submenuWeg();
	document.getElementById(welches).style.visibility="visible";
}