// toggle visibility 
/*
function toggle( targetId ){
  if (document.getElementById){
  		target = document.getElementById( targetId );
  			if (target.style.display == "none"){
  				target.style.display = "";
  			} else {
  				target.style.display = "none";
  			}
  	}
}
*/

function toggle( targetId ){
  if (document.getElementById){
  		target = document.getElementById( targetId );
  			if (target.style.display == "none"){
  				target.style.display = "";
  			} else {
  				target.style.display = "none";
  			}
  	}
}


function displayToggle(id) {
  var el = document.getElementById(id).style; 
  if(el.display == "none") {
  el.display = "block";  
  }
  else if(el.display == "block") {
  el.display = "none";
}
}