function newImage(arg) {
   	if (document.images) {
   		rslt = new Image();
   		rslt.src = arg;
   		return rslt;
   	}
   }
  
   var preloadFlag = false;
   function preloadHomeImages(s) {
   	var slide = s;
	if (document.images) {
   		
		if (slide=='Welcome') {
			document.getElementById('welcomeGraphTopic').style.display = "inline";
		}else{
			document.getElementById('welcomeGraphTopic').style.display = "none";
		}
		
		if (slide=='ChemicalClues') {
			document.getElementById('ChemicalCluesGraphTopic').style.display = "inline";	
		}else{
			document.getElementById('ChemicalCluesGraphTopic').style.display = "none";
		}
		
		if (slide=='Ozone') {
			document.getElementById('OzoneGraphTopic').style.display = "inline";	
		}else{
			document.getElementById('OzoneGraphTopic').style.display = "none";
		}
		
		if (slide=='GlobalWarming') {
			document.getElementById('GlobalWarmingGraphTopic').style.display = "inline";	
		}else{
			document.getElementById('GlobalWarmingGraphTopic').style.display = "none";
		}
			
		if (slide=='GlobalWaterCycle') {
			document.getElementById('GlobalWaterCycleGraphTopic').style.display = "inline";	
		}else{
			document.getElementById('GlobalWaterCycleGraphTopic').style.display = "none";
		}
		
		if (slide=='BiomassBurning') {
			document.getElementById('BiomassBurningGraphTopic').style.display = "inline";	
		}else{
			document.getElementById('BiomassBurningGraphTopic').style.display = "none";
		}
		
		if (slide=='LocalAndRegional') {
			document.getElementById('LocalAndRegionalGraphTopic').style.display = "inline";	
		}else{
			document.getElementById('LocalAndRegionalGraphTopic').style.display = "none";
		}
		
		if (slide=='WhatIsTES') {
			document.getElementById('WhatIsTESGraphTopic').style.display = "inline";	
		}else{
			document.getElementById('WhatIsTESGraphTopic').style.display = "none";
		}
		
		if (slide=='DetectingAltitudes') {
			document.getElementById('DetectingAltitudesGraphTopic').style.display = "inline";	
		}else{
			document.getElementById('DetectingAltitudesGraphTopic').style.display = "none";
		}
		
		//homeSunSync = newImage("./images/homeSunSync.jpg");		
		//document.getElementById('SunSyncGraphTopic').style.display = "none";	
		//document.getElementById('SunSyncTextTopic').style.display = "none";
		
		if (slide=='LimbAndNadir') {
			document.getElementById('LimbAndNadirGraphTopic').style.display = "inline";	
		}else{
			document.getElementById('LimbAndNadirGraphTopic').style.display = "none";
		}
		
		if (slide=='Balloon') {
			document.getElementById('BalloonGraphTopic').style.display = "inline";	
		}else{
			document.getElementById('BalloonGraphTopic').style.display = "none";
		}		
		
   	}
   }
   
   
   function turnOffHomeImages() {
   		//MM_swapImage('homeRollovers','','./images/homeWelcome.jpg',1);
		//MM_swapImage('homeWelcome','','./images/homeWelcome.jpg',1);
  		//MM_swapImage('homeChemicalClues','','./images/homeWelcome.jpg',1);   
		
		document.getElementById('welcomeGraphTopic').style.display = "none";
		//document.getElementById('welcomeTextTopic').style.display = "none";
		document.getElementById('ChemicalCluesGraphTopic').style.display = "none";	
		//document.getElementById('ChemicalCluesTextTopic').style.display = "none";	
		document.getElementById('OzoneGraphTopic').style.display = "none";	
		//document.getElementById('OzoneTextTopic').style.display = "none";	
		document.getElementById('GlobalWarmingGraphTopic').style.display = "none";	
		//document.getElementById('GlobalWarmingTextTopic').style.display = "none";	
		document.getElementById('GlobalWaterCycleGraphTopic').style.display = "none";	
		//document.getElementById('GlobalWaterCycleTextTopic').style.display = "none";
		document.getElementById('BiomassBurningGraphTopic').style.display = "none";	
		//document.getElementById('BiomassBurningTextTopic').style.display = "none";
		document.getElementById('LocalAndRegionalGraphTopic').style.display = "none";	
		//document.getElementById('LocalAndRegionalTextTopic').style.display = "none";
		document.getElementById('WhatIsTESGraphTopic').style.display = "none";	
		//document.getElementById('WhatIsTESTextTopic').style.display = "none";
		document.getElementById('DetectingAltitudesGraphTopic').style.display = "none";	
		//document.getElementById('DetectingAltitudesTextTopic').style.display = "none";
		//document.getElementById('SunSyncGraphTopic').style.display = "none";	
		//document.getElementById('SunSyncTextTopic').style.display = "none";
		document.getElementById('LimbAndNadirGraphTopic').style.display = "none";	
		//document.getElementById('LimbAndNadirTextTopic').style.display = "none";
		document.getElementById('BalloonGraphTopic').style.display = "none";	
		//document.getElementById('BalloonTextTopic').style.display = "none";
		
   }