// JavaScript Document
var el;

function displayContent(e)
{
	if(window.event)
	{
		//alert('window.event');
		which = window.event.srcElement.getAttribute('displaySection');
	}
		
	else
		which = e.target.getAttribute('displaySection');
	
	if(which.length == 0) return;
	// hide old content
	if(!el)
	{
		el = document.getElementById('about');
	}
	el.style.display='none';
	
	el = document.getElementById(which);
	el.style.display='block';
}

function addEvent(elm, evType, fn, useCapture) {
  if (elm.addEventListener) { 
    elm.addEventListener(evType, fn, useCapture); 
    return true; 
  } else if (elm.attachEvent) { 	
    var r = elm.attachEvent('on' + evType, fn); 
	//alert(elm.getAttribute('displaySection'));
    return r; 
  } else {
    elm['on' + evType] = fn;
  }
}