var preloadFlag = false;
function preloadImages() {
if (document.images)  {
	// load images
	

	earlyyearsoff=new Image();
	earlyyearsoff.src = '../../bnb/butop1.gif';			
	earlyyearson=new Image();
	earlyyearson.src = '../../bnb/butnp1.gif';
	
	ks1off=new Image();
	ks1off.src = '../../bnb/butop2.gif';			
	ks1on=new Image();
	ks1on.src = '../../bnb/butnp2.gif';
	
	ks2off=new Image();
	ks2off.src = '../../bnb/butop3.gif';			
	ks2on=new Image();
	ks2on.src = '../../bnb/butnp3.gif';
	
	dramaspeaklistenoff=new Image();
	dramaspeaklistenoff.src = '../../bnb/butop7.gif';			
	dramaspeaklistenon=new Image();
	dramaspeaklistenon.src = '../../bnb/butnp7.gif';
	
	lessonplanningoff=new Image();
	lessonplanningoff.src = '../../bnb/butop4.gif';			
	lessonplanningon=new Image();
	lessonplanningon.src = '../../bnb/butnp4.gif';
	
	artspolicyoff=new Image();
	artspolicyoff.src = '../../bnb/butop5.gif';			
	artspolicyon=new Image();
	artspolicyon.src = '../../bnb/butnp5.gif';
	
	dramapolicyoff=new Image();
	dramapolicyoff.src = '../../bnb/butop6.gif';			
	dramapolicyon=new Image();
	dramapolicyon.src = '../../bnb/butnp6.gif';
	
	primarywkshopsoff=new Image();
	primarywkshopsoff.src = '../../bnb/butop8.gif';			
	primarywkshopson=new Image();
	primarywkshopson.src = '../../bnb/butnp8.gif';
	
	preloadFlag = true;
	window.focus();
		}
}


// function that does MouseOvers and MouseOut calls


function buttonChange(imName,imSource) {
		if (document.images && (preloadFlag == true)) {
		document[imName].src=eval(imSource + ".src");
	}
}