function toggleBlockElement(){ //usage toggleBlockElement('id1','id2','id3','id4','etc')
  var element;
  for (var i=0; i<=toggleBlockElement.arguments.length; i++) {
    element = document.getElementById(toggleBlockElement.arguments[i]);
       if(element == null) { continue };
    element.style.display=='block' ?  element.style.display='none' : element.style.display='block';
  }
}

function toggleInlineElement(){ //usage toggleInlineElement('id1','id2','id3','id4','etc')
  var element;
  for (var i=0; i<=toggleInlineElement.arguments.length; i++) {
    element = document.getElementById(toggleInlineElement.arguments[i]);
       if(element == null) { continue };
    element.style.display=='inline' ?  element.style.display='none' : element.style.display='inline';
  }
}

function showBlockElement(){ //usage showBlockElement('id1','id2','id3','id4','etc')
 var element;
 for (var i=0; i<=showBlockElement.arguments.length; i++) {
    element = document.getElementById(showBlockElement.arguments[i]);
      if(element){
         element.style.display='block';
      }
 }
}

function showInlineElement(){ //usage showInlineElement('id1','id2','id3','id4','etc')
 var element;
 for (var i=0; i<=showInlineElement.arguments.length; i++) {
    element = document.getElementById(showInlineElement.arguments[i]);
      if(element){
         element.style.display='inline';
      }
 }
}

function hideElement(){  //usage hideElement('id1','id2','id3','id4','etc')
 var element;
 for (var i=0; i<=hideElement.arguments.length; i++) {
    element = document.getElementById(hideElement.arguments[i]);
      if(element == null) { continue };
    element.style.display='none';
 }
}