function toggleVisible(elementid)
{
  tmpID = document.getElementById(elementid);
  tmpID.style.display = tmpID.style.display == "block" ? "none" : "block";
}

function $() {
  var elements = new Array();
  for (var i = 0; i < arguments.length; i++) {
    var element = arguments[i];
    if (typeof element == 'string')
      element = document.getElementById(element);
    if (arguments.length == 1)
      return element;
    elements.push(element);
  }
  return elements;
}

function toggle(obj) {
  var el = $(obj);
  el.style.display = (el.style.display != 'none' ? 'none' : '' );
}

function toggleOff(obj)
{
  for ( var i=0; i < arguments.length; i++ ) {
    $(arguments[i]).style.display = ($(arguments[i]).style.display != 'none' ? 'none' : '' );
  }
}
  
function toggleOn(obj)
{
  for ( var i=0; i < arguments.length; i++ ) {
    $(arguments[i]).style.display = ($(arguments[i]).style.display == 'block' ? 'none' : 'block' );
  }
}

//used on international/courses-bl-elsewhere to toggle two divs at once...
function showTwo(text1,text2) {
	toggleVisible(text1);
	toggleVisible(text2);
}

//used on international/courses-bl-elsewhere to toggle three divs at once...
function showThree(text1,text2,text3) {
	toggleVisible(text1);
	toggleVisible(text2);
	toggleVisible(text3);	
}