function displaySwitching(id)
{
	//alert(id);
	var x = new getObj(id);
	x.style.display = (x.style.display == 'block') ? 'none' : 'block';
}

function getObj(name)
{
  if (document.getElementById)
  {
  	this.obj = document.getElementById(name);
	this.style = document.getElementById(name).style;
  }
  else if (document.all)
  {
	this.obj = document.all[name];
	this.style = document.all[name].style;
  }
  else if (document.layers)
  {
   	this.obj = document.layers[name];
   	this.style = document.layers[name];
  }
}

/* used for switching styles in course left nav.  called in sessionPage.xsl */
function backgroundSwitch(id, newState)
{
	var x = new getObj(id);
	var color = "FFFFFF"; // default is off
	if( newState == "over" ) { color = "FEF5C1"; }

	var img = "url(/educator_root/images/background/grad_course_sidenav.gif)" ;
	if( newState == "over" ) { img = "url(/educator_root/images/background/grad_course_sidenav_yel.gif)" ; }

	var x = new getObj(id);
	x.style.backgroundColor = color;

	var y = new getObj(id + "-right");
	y.style.backgroundImage = img;
}