if (document.images)
   {
     
	 
	 //Delivering Value in 2006
	 
	 
	 welistenon= new Image();
     welistenon.src="../common/images/nav/side/welisten_ro.jpg";  
     welistenoff= new Image();
     welistenoff.src="../common/images/nav/side/welisten.jpg";
	 
	 
	 wedeliveron= new Image();
     wedeliveron.src="../common/images/nav/side/wedeliver_ro.jpg";  
     wedeliveroff= new Image();
     wedeliveroff.src="../common/images/nav/side/wedeliver.jpg";
	
	 
	 highlights2on= new Image();
	 highlights2on.src="../common/images/nav/side/2006highlights_ro.jpg";  
     highlights2off= new Image();
     highlights2off.src="../common/images/nav/side/2006highlights.jpg";
	 
	 
	 valueon= new Image();
	 valueon.src="../common/images/nav/side/value_ro.jpg";  
     valueoff= new Image();
     valueoff.src="../common/images/nav/side/value.jpg";
	 
	 
	 shareholderon= new Image();
	 shareholderon.src="../common/images/nav/side/shareholder_ro.jpg";  
     shareholderoff= new Image();
     shareholderoff.src="../common/images/nav/side/shareholder.jpg";
	 
	 
	 
	 //mdna subnav
	 
	 resultson= new Image();
     resultson.src="../common/images/nav/side/results_ro.jpg";  
     resultsoff= new Image();
     resultsoff.src="../common/images/nav/side/results.jpg";

     corpstrategyon= new Image();
     corpstrategyon.src="../common/images/nav/side/corpstrategy_ro.jpg";  
     corpstrategyoff= new Image();
     corpstrategyoff.src="../common/images/nav/side/corpstrategy.jpg";
	 
	 forwardon= new Image();
     forwardon.src="../common/images/nav/side/forward_ro.jpg";  
     forwardoff= new Image();
     forwardoff.src="../common/images/nav/side/forward.jpg";

     liquidspipelineson= new Image();
     liquidspipelineson.src="../common/images/nav/side/liquidspipelines_ro.jpg";  
     liquidspipelinesoff= new Image();
     liquidspipelinesoff.src="../common/images/nav/side/liquidspipelines.jpg";

     gaspipelineson= new Image();
     gaspipelineson.src="../common/images/nav/side/gaspipelines_ro.jpg";  
     gaspipelinesoff= new Image();
     gaspipelinesoff.src="../common/images/nav/side/gaspipelines.jpg";

     sponsoredon= new Image();
     sponsoredon.src="../common/images/nav/side/sponsored_ro.jpg";  
     sponsoredoff= new Image();
     sponsoredoff.src="../common/images/nav/side/sponsored.jpg";

     gasdiston= new Image();
     gasdiston.src="../common/images/nav/side/gasdist_ro.jpg";  
     gasdistoff= new Image();
     gasdistoff.src="../common/images/nav/side/gasdist.jpg";

     internationalon= new Image();
     internationalon.src="../common/images/nav/side/international_ro.jpg";  
     internationaloff= new Image();
     internationaloff.src="../common/images/nav/side/international.jpg";

     corporateon= new Image();
     corporateon.src="../common/images/nav/side/corporate_ro.jpg";  
     corporateoff= new Image();
     corporateoff.src="../common/images/nav/side/corporate.jpg";

     liquidityon= new Image();
     liquidityon.src="../common/images/nav/side/liquidity_ro.jpg";  
     liquidityoff= new Image();
     liquidityoff.src="../common/images/nav/side/liquidity.jpg";
	 
	 sensitivityon= new Image();
     sensitivityon.src="../common/images/nav/side/sensitivity_ro.jpg";  
     sensitivityoff= new Image();
     sensitivityoff.src="../common/images/nav/side/sensitivity.jpg";

     riskmanagementon= new Image();
     riskmanagementon.src="../common/images/nav/side/riskmanagement_ro.jpg";  
     riskmanagementoff= new Image();
     riskmanagementoff.src="../common/images/nav/side/riskmanagement.jpg";

     criticalon= new Image();
     criticalon.src="../common/images/nav/side/critical_ro.jpg";  
     criticaloff= new Image();
     criticaloff.src="../common/images/nav/side/critical.jpg";

     changeson= new Image();
     changeson.src="../common/images/nav/side/changes_ro.jpg";  
     changesoff= new Image();
     changesoff.src="../common/images/nav/side/changes.jpg";

     disclosureon= new Image();
     disclosureon.src="../common/images/nav/side/disclosure_ro.jpg";  
     disclosureoff= new Image();
     disclosureoff.src="../common/images/nav/side/disclosure.jpg";

     quarterlyon= new Image();
     quarterlyon.src="../common/images/nav/side/quarterly_ro.jpg";  
     quarterlyoff= new Image();
     quarterlyoff.src="../common/images/nav/side/quarterly.jpg";

     fourthon= new Image();
     fourthon.src="../common/images/nav/side/fourth_ro.jpg";  
     fourthoff= new Image();
     fourthoff.src="../common/images/nav/side/fourth.jpg";
	 
	 selectedon= new Image();
     selectedon.src="../common/images/nav/side/selected_ro.jpg";  
     selectedoff= new Image();
     selectedoff.src="../common/images/nav/side/selected.jpg";

     supplementary2on= new Image();
     supplementary2on.src="../common/images/nav/side/suppinfo_ro.jpg";  
     supplementary2off= new Image();
     supplementary2off.src="../common/images/nav/side/suppinfo.jpg";

     relatedon= new Image();
     relatedon.src="../common/images/nav/side/related_ro.jpg";  
     relatedoff= new Image();
     relatedoff.src="../common/images/nav/side/related.jpg";
	 
	 //financial subnav
	 
	 managementon= new Image();
     managementon.src="../common/images/nav/side/management_ro.jpg";  
     managementoff= new Image();
     managementoff.src="../common/images/nav/side/management.jpg";

	 auditorson= new Image();
     auditorson.src="../common/images/nav/side/auditors_ro.jpg";  
     auditorsoff= new Image();
     auditorsoff.src="../common/images/nav/side/auditors.jpg";

	 earningson= new Image();
     earningson.src="../common/images/nav/side/earnings_ro.jpg";  
     earningsoff= new Image();
     earningsoff.src="../common/images/nav/side/earnings.jpg";

	 retainedon= new Image();
     retainedon.src="../common/images/nav/side/retained_ro.jpg";  
     retainedoff= new Image();
     retainedoff.src="../common/images/nav/side/retained.jpg";
	 
	 cashflowson= new Image();
     cashflowson.src="../common/images/nav/side/cashflows_ro.jpg";  
     cashflowsoff= new Image();
     cashflowsoff.src="../common/images/nav/side/cashflows.jpg";

	 financialon= new Image();
     financialon.src="../common/images/nav/side/financial_ro.jpg";  
     financialoff= new Image();
     financialoff.src="../common/images/nav/side/financial.jpg";

	 noteson= new Image();
     noteson.src="../common/images/nav/side/notes_ro.jpg";  
     notesoff= new Image();
     notesoff.src="../common/images/nav/side/notes.jpg";
	 
	 
	 //supplementary  subnav

	 quarterlyshareon= new Image();
     quarterlyshareon.src="../common/images/nav/side/quarterlyshare_ro.jpg";  
     quarterlyshareoff= new Image();
     quarterlyshareoff.src="../common/images/nav/side/quarterlyshare.jpg";

	 fiveyearon= new Image();
     fiveyearon.src="../common/images/nav/side/fiveyear_ro.jpg";  
     fiveyearoff= new Image();
     fiveyearoff.src="../common/images/nav/side/fiveyear.jpg";

	

	 investorinfoon= new Image();
     investorinfoon.src="../common/images/nav/side/investorinfo_ro.jpg";  
     investorinfooff= new Image();
     investorinfooff.src="../common/images/nav/side/investorinfo.jpg";
	 
	 
	 
	 //corporate responsibility  subnav
	 
	 corpsocialon= new Image();
     corpsocialon.src="../common/images/nav/side/corpsocial_ro.jpg";  
     corpsocialoff= new Image();
     corpsocialoff.src="../common/images/nav/side/corpsocial.jpg";
	 
	 
	 awardson= new Image();
     awardson.src="../common/images/nav/side/awards_ro.jpg";  
     awardsoff= new Image();
     awardsoff.src="../common/images/nav/side/awards.jpg";
	
	 
	 corpgov2on= new Image();
	 corpgov2on.src="../common/images/nav/side/corpgov_ro.jpg";  
     corpgov2off= new Image();
     corpgov2off.src="../common/images/nav/side/corpgov.jpg";
	 
	 
	 boardon= new Image();
	 boardon.src="../common/images/nav/side/board_ro.jpg";  
     boardoff= new Image();
     boardoff.src="../common/images/nav/side/board.jpg";
	 
	 
	 senioron= new Image();
	 senioron.src="../common/images/nav/side/senior_ro.jpg";  
     senioroff= new Image();
     senioroff.src="../common/images/nav/side/senior.jpg";
	 
	//our strategy and core businesses
	
	
	 strategies2on= new Image();
     strategies2on.src="../common/images/nav/side/strategies_ro.jpg";  
     strategies2off= new Image();
     strategies2off.src="../common/images/nav/side/strategies.jpg";
	 
	 
	 coreon= new Image();
     coreon.src="../common/images/nav/side/core_ro.jpg";  
     coreoff= new Image();
     coreoff.src="../common/images/nav/side/core.jpg";
	
	 
	 liquidspipeon= new Image();
	 liquidspipeon.src="../common/images/nav/side/liquidspipe_ro.jpg";  
     liquidspipeoff= new Image();
     liquidspipeoff.src="../common/images/nav/side/liquidspipe.jpg";
	 
	 
	 gasdistserviceon= new Image();
	 gasdistserviceon.src="../common/images/nav/side/gasdistservice_ro.jpg";  
     gasdistserviceoff= new Image();
     gasdistserviceoff.src="../common/images/nav/side/gasdistservice.jpg";
	 
	 
	 naturalon= new Image();
	 naturalon.src="../common/images/nav/side/natural_ro.jpg";  
     naturaloff= new Image();
     naturaloff.src="../common/images/nav/side/natural.jpg";
	 

     
   }
   
   function img_act(imgName) {
		imgOn = eval(imgName + "on.src");
		document [imgName].src = imgOn;
   } 


function img_inact(imgName) {
		imgOff = eval(imgName + "off.src");
		document [imgName].src = imgOff;  
  }