function toggle( targetId ){
  if (document.getElementById){
		clearAll();
  		target = document.getElementById( targetId );
  			if (target.style.display == "none"){
  				target.style.display = "";
  			} else {
  				target.style.display = "none";
  			}
  	}
}
	function clearAll(){
		
		target = document.getElementById('ankle');
		target.style.display = "none";
		target = document.getElementById('neck');
		target.style.display = "none";
		target = document.getElementById('shoulder');
		target.style.display = "none";
		target = document.getElementById('hip');
		target.style.display = "none";
		target = document.getElementById('back');
		target.style.display = "none";
		target = document.getElementById('elbow');
		target.style.display = "none";
		target = document.getElementById('knee');
		target.style.display = "none";
		target = document.getElementById('helperText');
		target.style.display = "none";
		
	
	}