function MM_showHideLayers() {
  var i,p,v,obj,args=MM_showHideLayers.arguments;
  for (i=0; i<(args.length-2); i+=3) 
  with (document) if (getElementById && ((obj=getElementById(args[i]))!=null)) { v=args[i+2];
    if (obj.style) {
		obj=obj.style;
		v= (v=='show') ?'block':(v=='hidden')?'none':v; 
	}
    obj.display=v; }
}


function $(element){
  return element = document.getElementById(element);
}

function use(obj ,xj ){
  var obj=$(obj);
  if(xj==1){
    obj.style.display='block';
  }else{
    obj.style.display='none';
  }
}


function nav(xj){
for(i=1;i<11;i++)
{
  var obj=$("menu"+i);
  if(i!=xj){
    obj.style.display='none';
  }else{
    obj.style.display='block';
  }
}
}

function left(xj){
var obj=$(xj);
  if(obj.style.display != 'block'){
      obj.style.display='block';
  }else{
      obj.style.display='none';
  }
}

function killErrors() { 
return true; 
} 
window.onerror = killErrors;