function HEL_toggleHelInfo(divID) { 
	infoDiv = document.getElementById(divID);
  if (infoDiv == null) return; 
	if (infoDiv.style.display == "none") 
    infoDiv.style.display = "block"; 
	else 
    infoDiv.style.display = "none";
	}


function HEL_externalLinks() { 
	if (!document.getElementsByTagName) return;
	var anchors = document.getElementsByTagName("a");
	for (var i=0; i<anchors.length; i++) 
	{ 
		if (anchors[i].getAttribute("href") && anchors[i].getAttribute("rel") == "external")
   anchors[i].target = "_blank";
	}
}

function HEL_addLoadEvent(func) {
  var oldonload = window.onload;
  if (typeof window.onload != 'function') {
    window.onload = func;
  } else {
    window.onload = function() {
      oldonload();
      func();
    }
  }
}	

HEL_addLoadEvent(HEL_externalLinks);