function selectGroup(startCB,endCB,masterCB) {

	var onOff = true;
	
	if(document.getElementById(masterCB).checked==true){
		onOff = true;
	}
	else {
		onOff = false;
	}
		
	for (var i=startCB; i<endCB+1; i++)
  	{ 
    	document.dpo_newsletter.named_optin[i].checked = onOff;
  	}
}

function uncheckAll(thevalue) {
  if(thevalue.checked){
  	thevalue.checked = false;
	}
}

function selectAll(cbList,bSelect) {
  for (var i=0; i<cbList.length; i++)
  { 
    cbList[i].selected = cbList[i].checked = bSelect;
  }
  //check/uncheck editorial newsletter
  document.dpo_newsletter.allnews.checked = bSelect;
  document.dpo_newsletter.allbusiness.checked = bSelect;
  document.dpo_newsletter.allopinion.checked = bSelect;
  document.dpo_newsletter.allspotlight.checked = bSelect;
  document.dpo_newsletter.allrecreation.checked = bSelect;
  document.dpo_newsletter.allsports.checked = bSelect;
  document.dpo_newsletter.allpreps.checked = bSelect;
}

function clearAll(cbList) {
  for (var i=0; i<cbList.length; i++)
  { 
    cbList[i].selected = cbList[i].checked = false;
  }
  //check/uncheck editorial newsletter
  document.dpo_newsletter.allnews.checked = false;
  document.dpo_newsletter.allbusiness.checked = false;
  document.dpo_newsletter.allopinion.checked = false;
  document.dpo_newsletter.allspotlight.checked = false;
  document.dpo_newsletter.allrecreation.checked = false;
  document.dpo_newsletter.allsports.checked = false;
  document.dpo_newsletter.allpreps.checked = false;
}