var aImgPreloader = new Array;
// imageName, imageSrc, imageOverSrc
// add a new line for each img that needs to be preloaded
aImgPreloader[aImgPreloader.length] = new Array('windowsmedia','./i/windows_media_btn.gif','./i/windows_media_btn_over.gif');
aImgPreloader[aImgPreloader.length] = new Array('quicktimemedia','./i/quicktime_media_btn.gif','./i/quicktime_media_btn_over.gif');
aImgPreloader[aImgPreloader.length] = new Array('dialupmedia','./i/dialup_media_btn.gif','./i/dialup_media_btn_over.gif');

aImgPreloader[aImgPreloader.length] = new Array('administrative','./i/administrative.gif','./i/administrativeOver.gif');
aImgPreloader[aImgPreloader.length] = new Array('administrativeSub','../i/administrative.gif','../i/administrativeOver.gif');

aImgPreloader[aImgPreloader.length] = new Array('bank','./i/bank.gif','./i/bankOver.gif');
aImgPreloader[aImgPreloader.length] = new Array('bankSub','../i/bank.gif','../i/bankOver.gif');

aImgPreloader[aImgPreloader.length] = new Array('loan','./i/loan.gif','./i/loanOver.gif');
aImgPreloader[aImgPreloader.length] = new Array('loanSub','../i/loan.gif','../i/loanOver.gif');

aImgPreloader[aImgPreloader.length] = new Array('Business','./i/business.gif','./i/businessOver.gif');
aImgPreloader[aImgPreloader.length] = new Array('Computers','./i/computers.gif','./i/computersOver.gif');
aImgPreloader[aImgPreloader.length] = new Array('Engineering','./i/engineering.gif','./i/engineeringOver.gif');
aImgPreloader[aImgPreloader.length] = new Array('Education','./i/education.gif','./i/educationOver.gif');
aImgPreloader[aImgPreloader.length] = new Array('Health Care','./i/health.gif','./i/healthOver.gif');

aImgPreloader[aImgPreloader.length] = new Array('Logistics','./i/logistics.gif','./i/logisticsOver.gif');
aImgPreloader[aImgPreloader.length] = new Array('logistics','./i/logistics.gif','./i/logisticsOver.gif');

aImgPreloader[aImgPreloader.length] = new Array('Industrial','./i/industrial.gif','./i/industrialOver.gif');

aImgPreloader[aImgPreloader.length] = new Array('security','./i/security.gif','./i/securityOver.gif');
aImgPreloader[aImgPreloader.length] = new Array('securitySub','../i/security.gif','../i/securityOver.gif');

aImgPreloader[aImgPreloader.length] = new Array('network','./i/network.gif','./i/networkOver.gif');
aImgPreloader[aImgPreloader.length] = new Array('networkSub','../i/network.gif','../i/networkOver.gif');

aImgPreloader[aImgPreloader.length] = new Array('civil','./i/civil.gif','./i/civilOver.gif');
aImgPreloader[aImgPreloader.length] = new Array('civilSub','../i/civil.gif','../i/civilOver.gif');

aImgPreloader[aImgPreloader.length] = new Array('drafter','./i/drafter.gif','./i/drafterOver.gif');
aImgPreloader[aImgPreloader.length] = new Array('drafterSub','../i/drafter.gif','../i/drafterOver.gif');

aImgPreloader[aImgPreloader.length] = new Array('mechanical','./i/mechanical.gif','./i/mechanicalOver.gif');
aImgPreloader[aImgPreloader.length] = new Array('mechanicalSub','../i/mechanical.gif','../i/mechanicalOver.gif');

aImgPreloader[aImgPreloader.length] = new Array('automotive','./i/automotive.gif','./i/automotiveOver.gif');
aImgPreloader[aImgPreloader.length] = new Array('automotiveSub','../i/automotive.gif','../i/automotiveOver.gif');

aImgPreloader[aImgPreloader.length] = new Array('cnc','./i/cnc.gif','./i/cncOver.gif');
aImgPreloader[aImgPreloader.length] = new Array('cncSub','../i/cnc.gif','../i/cncOver.gif');

aImgPreloader[aImgPreloader.length] = new Array('design','./i/design.gif','./i/designOver.gif');
aImgPreloader[aImgPreloader.length] = new Array('designSub','../i/design.gif','../i/designOver.gif');

aImgPreloader[aImgPreloader.length] = new Array('preschool','./i/preschool.gif','./i/preschoolOver.gif');
aImgPreloader[aImgPreloader.length] = new Array('preschoolSub','../i/preschool.gif','../i/preschoolOver.gif');

aImgPreloader[aImgPreloader.length] = new Array('administrator','./i/administrator.gif','./i/administratorOver.gif');
aImgPreloader[aImgPreloader.length] = new Array('administratorSub','../i/administrator.gif','../i/administratorOver.gif');

aImgPreloader[aImgPreloader.length] = new Array('highschool','./i/highschool.gif','./i/highschoolOver.gif');
aImgPreloader[aImgPreloader.length] = new Array('highschoolSub','../i/highschool.gif','../i/highschoolOver.gif');

aImgPreloader[aImgPreloader.length] = new Array('quality','./i/quality.gif','./i/qualityOver.gif');
aImgPreloader[aImgPreloader.length] = new Array('qualitySub','../i/quality.gif','../i/qualityOver.gif');

aImgPreloader[aImgPreloader.length] = new Array('operations','./i/operations.gif','./i/operationsOver.gif');
aImgPreloader[aImgPreloader.length] = new Array('operationsSub','../i/operations.gif','../i/operationsOver.gif');

aImgPreloader[aImgPreloader.length] = new Array('medical','./i/medical.gif','./i/medicalOver.gif');
aImgPreloader[aImgPreloader.length] = new Array('medicalSub','../i/medical.gif','../i/medicalOver.gif');

aImgPreloader[aImgPreloader.length] = new Array('rn','./i/rn.gif','./i/rnOver.gif');
aImgPreloader[aImgPreloader.length] = new Array('rnSub','../i/rn.gif','../i/rnOver.gif');

aImgPreloader[aImgPreloader.length] = new Array('rn2','../i/rn2.gif','../i/rn2Over.gif');
aImgPreloader[aImgPreloader.length] = new Array('rn2Sub','../i/rn2.gif','../i/rn2Over.gif');


// load up image container object based on previous array
var oImgContainer = new Object;
for(i=0;i<aImgPreloader.length;i++){
	if(document.images){
		oImgContainer[aImgPreloader[i][0]] = new Image;
		oImgContainer[aImgPreloader[i][0]].src = aImgPreloader[i][1];
		oImgContainer[aImgPreloader[i][0] + 'On'] = new Image;
		oImgContainer[aImgPreloader[i][0] + 'On'].src = aImgPreloader[i][2];
	}
}

// rollover function
// image name (sImg) corresponds with aImgPreloader and name attribute of tag
function roll(sImg,bOver){
	if(document.images){
		if (bOver) {
			document.images[sImg].src = oImgContainer[sImg + 'On'].src;
		} else {
			document.images[sImg].src = oImgContainer[sImg].src;


		}
	}
}